scholarly journals Potential Antiproliferative Activity and Evaluation of Essential Oil Composition of the Aerial Parts of Tamarix aphylla (L.) H.Karst.: A Wild Grown Medicinal Plant in Jordan

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
N. Alhourani ◽  
V. Kasabri ◽  
Y. Bustanji ◽  
R. Abbassi ◽  
M. Hudaib
Keyword(s):  
Cell Lines ◽  
Cancer Cell ◽  
Human Fibroblasts ◽  
Cancer Cell Lines ◽  
Cytotoxic Agents ◽  
Normal Fibroblast ◽  
Breast Adenocarcinoma ◽  
Dependent Manner ◽  
Aerial Parts ◽  
Mcf 7

Essential (volatile) oil from aerial parts of Tamarix aphylla (L.) H.Karst. (Tamaricaceae) grown wild in Jordan was hydrodistilled by Clevenger apparatus and analyzed by means of GC and GC-MS techniques. In vitro screening of potential cytotoxicity of the aqueous (AE) and ethanol (EE) extracts was also evaluated against human breast adenocarcinoma (MCF-7), colorectal adenocarcinoma (Caco-2), and pancreatic carcinoma (Panc-1) cancer cell lines as well as normal human fibroblasts. GC-MS analysis of T. aphylla EO revealed its richness in nonterpenoid nonaromatic hydrocarbons (52.39%), with predominance of 6,10,14-trimethyl-2-pentadecanone as the principal component. Biologically, the plant extracts exhibited cytotoxicity effects in dose-dependent manner against most of the tested cell lines, but potent effects were only predicted against MCF-7 cells with IC50 values of 2.17 ± 0.10 and 26.65 ± 3.09 μg/mL for T. aphylla AE and EE, respectively. T. aphylla AE demonstrated a comparable cytotoxic effect with that offered by the control drug cisplatin (IC50 value of 1.17 ± 0.13 μg/mL), even with higher safety profile against normal fibroblast cells (IC50 values of T. aphylla AE versus cisplatin: 79.99 ± 4.90 versus 9.08 ± 0.29 μg/mL). T. aphylla extracts could be a valuable source for cytotoxic agents with high safety and selective cytotoxicity profiles. Unfortunately, no antiproliferative potential against Caco-2 or Panc-1 cancer cell lines was detected at a concentration less than 30 μg/mL.

Design, Synthesis and Cytotoxicity Evaluation of New 3, 5-Disubstituted-2-Thioxoimidazolidinones

2018 ◽  
Vol 18 (4) ◽  
pp. 573-582 ◽  
Author(s):  
Khaled R.A. Abdellatif ◽  
Mostafa M. Elbadawi ◽  
Mohammed T. Elsaady ◽  
Amer A. Abd El-Hafeez ◽  
Takashi Fujimura ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cell Line ◽  
Cell Lines ◽  
Cancer Cell ◽  
Topoisomerase I ◽  
Cancer Cell Line ◽  
Cytotoxic Agents ◽  
Dependent Manner ◽  
Human Lung Fibroblast ◽  
Mcf 7

Background: Some 2-thioxoimidazolidinones have been reported as anti-prostate and anti-breast cancer agents through their inhibitory activity on topoisomerase I that is considered as a potential chemotherapeutic target. Objective: A new series of 3,5-disubstituted-2-thioxoimidazolidinone derivatives 10a-f and their S-methyl analogs 11a-f were designed, synthesized and evaluated for cytotoxicity against human prostate cancer cell line (PC-3), human breast cancer cell line (MCF-7) and non-cancerous human lung fibroblast cell line (WI-38). </P><P> Results and Method: While compounds 10a-f showed a broad range of activities against PC-3 and MCF-7 cell lines (IC50 = 34.0 – 186.9 and 24.6 – 147.5 µM respectively), the S-methyl analogs 11a-f showed (IC50 = 22.7 – 198.5 and 16.9 – 188.2 µM respectively) in comparison with 5-fluorouracil (IC50 = 60.7 and 40.7 µM respectively). 11c (IC50 = 22.7 and 29.2 µM) and 11f (IC50 = 28.7 and 16.9 µM) were the most potent among all compounds against both PC-3 and MCF-7 respectively with no cytotoxicity against WI-38. Conclusion: The newly synthesized compounds showed good activity against PC-3 and MCF-7 cell lines in comparison with 5-fluorouracil. Compounds 11c and 11f bound with human topoisomerase I similar to its known inhibitors and significantly inhibited its DNA relaxation activity in a dose dependent manner which may rationalize their molecular mechanism as cytotoxic agents.

scholarly journals Analyzing Cytotoxic and Apoptogenic Properties ofScutellaria litwinowiiRoot Extract on Cancer Cell Lines

2011 ◽  
Vol 2011 ◽  
pp. 1-9 ◽  
Author(s):  
Zahra Tayarani-Najaran ◽  
Seyed Ahmad Emami ◽  
Javad Asili ◽  
Alireza Mirzaei ◽  
Seyed Hadi Mousavi
Keyword(s):  
Flow Cytometry ◽  
Cell Lines ◽  
Cancer Cell ◽  
Methylene Chloride ◽  
Apoptotic Cell ◽  
Malignant Cell ◽  
Cancer Cell Lines ◽  
Dependent Manner ◽  
Antitumor Effects ◽  
Mcf 7

TheScutellariaspecies (Lamiaceae) is used as a source of flavonoids to treat a variety of diseases in traditional medicine. In spite of many reports about the cytotoxic and antitumor effects of some species of this genus, anticancer researches on one of the Iranian speciesS. litwinowiihave not yet been conducted.The cytotoxic properties of total methanol extract ofS. litwinowiiand its fractions were investigated on different cancer cell lines including AGS, HeLa, MCF-7, PC12 and NIH 3T3. Meanwhile, the role of apoptosis in this toxicity was explored. The cells were cultured in DMEM medium and incubated with different concentrations of herb plant extracts. Cell viability was quantitated by MTT assay. Apoptotic cells were determined using propidium iodide staining of DNA fragmentation by flow cytometry (sub-G1 peak).Scutellaria litwinowiiinhibited the growth of malignant cells in a dose-dependent manner. Among solvent fractions ofS. litwinowii, the methylene chloride fraction was found to be more toxic compared to other fractions. The IC50values of this fraction against AGS, HeLa, MCF-7 and PC12 cell lines after 24 h were determined, 121.2 ± 3.1, 40.9 ± 2.5, 115.9 ± 3.5 and 64.5 ± 3.4μg/ml, respectively.Scutellaria litwinowiiinduced a sub-G1 peak in the flow cytometry histogram of treated cells compared to control cells indicating that apoptotic cell death is involved inS. litwinowiitoxicity.Scutellaria litwinowiiexerts cytotoxic and proapototic effects in a variety of malignant cell lines and could be considered as a potential chemotherapeutic agent in cancer treatment.

scholarly journals Cytotoxic Constituents of Pachyrhizus Tuberosus from Peruvian Amazon

2013 ◽  
Vol 8 (10) ◽  
pp. 1934578X1300801 ◽  
Author(s):  
Olga Leuner ◽  
Jaroslav Havlik ◽  
Milos Budesinsky ◽  
Vladimir Vrkoslav ◽  
Jessica Chu ◽  
...  
Keyword(s):  
Cell Lines ◽  
Cancer Cell ◽  
Mtt Assay ◽  
Human Cancer ◽  
Chemical Constituents ◽  
Human Fibroblasts ◽  
Cancer Cell Lines ◽  
Cytotoxic Effects ◽  
Hct 116 ◽  
Mcf 7

Investigations into the chemical constituents of the seeds of the neglected tuber crop Pachyrhizus tuberosus (Leguminosae) resulted in the isolation of seven components: five rotenoids [12a-hydroxyerosone (1), 12a-hydroxydolineone (2), erosone (3), 12a-hydroxyrotenone (4) and rotenone (6)], a phenylfuranocoumarin [pachyrrhizine (5)] and an isoflavanone [neotenone (7)]. The compounds were isolated using several chromatography techniques and characterized and verified by NMR and HPLC/MS. The MTT assay was used to examine the selective cytotoxic effects of the methanolic P. tuberosus extract and isolated compounds in two human cancer cell lines [breast (MCF-7) and colorectal (HCT-116)] and in non-transformed human fibroblasts (MRC-5); IC50 values were calculated. The methanolic P. tuberosus extract displayed respectable cytotoxic effects against HCT-116 and MCF-7 cells with IC50 values of 7.3 and 6.3 μg/mL, respectively. Of the compounds, 6 exacted greatest cytotoxicity and selectivity towards the cancer cell lines tested, yielding IC50 values of 0.3 μg/mL against both MCF-7 and HCT-116 cells, and a 6-fold reduced activity against MRC-5 fibroblasts. Compound 4 also demonstrated cytotoxicity against MCF-7 and HCT-116 (1.1 and 1.8 μg/mL, respectively), and reduced cytotoxicity towards MRC-5 cells (7.5 μg/mL). The results revealed from the in vitro cytotoxic MTT assay are worthy of further antitumor investigation.

PRELIMINARY CYTOTOXIC EVALUATION OF Andrographis paniculata IN BREAST CANCER CELL LINES

2016 ◽  
Vol 2 (1) ◽  
pp. 34
Author(s):  
Tarwadi . ◽  
Churiyah . ◽  
Olivia Bunga Pongtuluran ◽  
Fifit Juniarti ◽  
Fery Azis Wijaya
Keyword(s):  
Breast Cancer ◽  
Cell Line ◽  
Cell Lines ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Cancer Cell Lines ◽  
Andrographis Paniculata ◽  
Normal Fibroblast ◽  
Breast Cancer Cell Lines ◽  
Mcf 7

Sambiloto (Andrographis paniculata) banyak digunakan untuk mengobati berbagai penyakit di Indonesia dan negara-negara Asia lainnya. Dalam studi ini, ekstrak metanol dan etanol sambiloto yang diperoleh dari B2PTO Tawangmangu telah diuji terhadap sel lini kanker payudara T47D dan MCF-7 dan sel lini normal fibroblast HFL-1 menggunakan reaksi enzimatik 3-(4,5-dimethylthiazoyl-2-yl) 2,5-diphenyltetrazoliumbromide (MTT). Uji in vitro terhadap sel lini normal fibroblast HFL-1 menunjukkan bahwa 50 ppm ekstrak metanol sambiloto tidak menghambat pertumbuhan sel. Tetapi, ekstrak metanol dan etanolnya menghasilkan IC50 yang relatif rendah pada sel lini kanker payudara, yaitu 111 ppm dan 122 ppm pada sel lini MCF-7 dan 70 ppm dan 197 ppm pada sel lini T47D. Selain itu, campuran ekstrak sambiloto yang mengandung 25% ekstrak Thyponium divaricatum dan Anredera cordifolia memberikan daya hambat pertumbuhan pada sel kanker payudara MCF-7 yang lebih besar, dengan nilai IC50 masing-masing adalah 68 ppm dan 34 ppm. Kesimpulannya, total ekstrak metanol atau etanol sambiloto yang diperoleh dari Tawangmangu memiliki potensi sebagai sumber senyawa anti-kanker serta perlu kajian lebih lanjut.Kata kunci: Ekstrak Andrographis paniculata, MTT, sel lini normal, sel lini kanker, aktivitas anti kanker ABSTRACTSambiloto (Andrographis paniculata) is widely used as medicine to treat various diseases in Indonesia and other Asian countries. In this study, methanolic and ethanolic extracts of sambiloto collected from B2PTO Tawangmangu have been tested againts breast cancer cell lines of T47D and MCF-7 and normal fibroblast cell line of HFL-1 using enzymatic reaction of 3-(4,5-dimethylthiazoyl-2-yl) 2,5-diphenyltetrazoliumbromide (MTT). In vitro assay performed on normal fibroblast of HFL-1 cell line showed that 50 ppm of methanolic extract of sambiloto did not inhibit cell growth. However, methanolic and ethanolic extracts of sambiloto gave relatively low of IC50 on breast cancer cell lines which were 111 ppm and 122 ppm on the MCF-7 cell lines and 70 ppm and 197 ppm on the T47D cell lines, respectively. In addition, the mixture of sambiloto extract containing 25% of Thyponium divaricatum and Anredera cordifolia extracts confered greater growth inhibition on breast cancer cell line of MCF-7, where IC50 values were 68 ppm and 34 ppm, respectively. In conclusion, the total methanolic or ethanolic extract of sambiloto collected from Tawangmangu has potency as a source of anti-cancer compounds and needs further study.Key words: Andrographis paniculata extract, MTT, normal cell line, cancer cell lines, anti-cancer activity

scholarly journals In Vitro Effects of Hemolymph Serum of Potamon persicum Crab (HSPPC) on MCF-7 and MDA-231 Breast Cancer Cell Lines

2019 ◽  
Vol 8 (2) ◽  
pp. 101-106
Author(s):  
Amin Mohammadi ◽  
Ali Mostafaie ◽  
Ahmad Bagheri ◽  
Sarah Kiani ◽  
Maryam Chalabi
Keyword(s):  
Breast Cancer ◽  
Cell Death ◽  
Cell Lines ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Cancer Cell Lines ◽  
Breast Cancer Cell Lines ◽  
Dependent Manner ◽  
Cell Death Assay ◽  
Mcf 7

Background: Breast cancer is the most common cause of cancer-related death in women worldwide. Therefore, there is an urget need to identify and develop therapeutic strategies against this deadly disease. This study is the first to investigate the effects of Hemolymph Serum of Potamon persicum Crab (HSPPC) on MCF-7 and MDA-231 breast cancer cell lines. Materials and Methods: LDH and MTT assays were performed on MCF-7 and MDA-231 breast cancer cell lines as well as human umbilical vein endothelial cells (HUVEC) to determine the cytotoxic and antiproliferative activity of the HSPPC at different concentrations. Further, the apoptosis inducing action of the hemolymph serum was determined by TUNEL (terminal deoxynucleotidyl transferasemediated dUTP nick end labeling) and cell death assay. Results: The IC50 values of HSPPC for MCF-7 and MDA-231 cell lines were 960±0.369 and 850±1.422 μg/mL, respectively. The growth of both MCF-7 and MDA-231 cell lines were significantly (P<0.001) inhibited by HSPPC as compared with untreated controls at 48 hours. The results showed that HSPPC had no cytotoxic effects but significantly inhibited cell growth in a dose and time dependent manner. In addition, DNA fragmentation analysis (TUNEL) and cell death assay indicated induction of apoptosis by HSPPC in MCF-7 and MDA-231 cell lines. Conclusion: The results suggest that HSPPC contains bioactive compound(s) with potentials for the treatment of breast cancer.

scholarly journals Physicochemical Composition, Antioxidant Profile and Anticancer Potentialities of Chico (Pachycereus Weberi) and Jiotilla (Escontria Chiotilla) Fruits Extract

2020 ◽  
Author(s):  
Luisaldo Sandate-Flores ◽  
Eduardo Romero-Esquivel ◽  
Patricia Reyna Ontiveros ◽  
Marcos Fredy Morales Celaya ◽  
José Rodriguez-Rodriguez ◽  
...  
Keyword(s):  
Antioxidant Activity ◽  
Vitamin C ◽  
Cell Lines ◽  
Cancer Cell ◽  
Cancer Cell Lines ◽  
Biologically Active ◽  
Normal Fibroblast ◽  
Total Phenolic ◽  
Escontria Chiotilla ◽  
Mcf 7

Mexico has a great diversity of cacti, however, many of their fruits have not been studied in greater depth. Several bioactive compounds available in cacti juices extract have demonstrated nutraceutical properties. Two cactus species are interesting for their biologically active pigments, which are chico (Pachycereus weberi (J. M.Coult.) Backeb)) and jiotilla (Escontria chiotilla (Weber) Rose)). Hence, the goal of this work was to evaluate the bioactive entities, i.e., betalains, total phenolic, vitamin C, antioxidant activity, and mineral content in the extract of the above-mentioned P. weberi and E. chiotilla. Then, clarified extracts were evaluated for their antioxidant activity and cytotoxicity (cancer cell lines) potentialities. Based on the obtained results, Chico fruit extract was found to be a good source of vitamin C (27.19&plusmn;1.95 mg L-Ascorbic acid/100g fresh sample). Moreover, chico extract resulted in a high concentration of micronutrients, i.e., potassium (517.75&plusmn;16.78 mg/100 g) and zinc (2.46&plusmn;0.65 mg/100 g). On the other hand, Jiotilla has a high content of biologically active pigment, i.e., betaxanthins (4.17&plusmn;0.35 mg/g dry sample). The antioxidant activities of clarified extracts of chico and jiotilla were 80.01&plusmn;5.10 and 280.88&plusmn;7.62 (DPPH method), respectively. From the cytotoxicity perspective against cancer cell lines, i.e., CaCo-2, MCF-7, HepG2, and PC-3, the clarified extracts of chico showed cytotoxicity in CaCo-2 (49.7&plusmn;0.01) and MCF-7 (45.56&plusmn;0.05). Normal fibroblast cell line (NIH/3T3) was used as a control for comparison purposes. While, jiotilla extract had cytotoxicity against HepG2 (47.31&plusmn;0.03) and PC-3 (53.65&plusmn;0.04). These results demonstrated that Chico and jiotilla are good resources of biologically active constituents with nutraceuticals potentialities.

scholarly journals Coupling Ifosfamide to nanoemulsion-based clove oil enhances its toxicity on malignant breast cancer and cervical cancer cells

Pharmacia ◽  
2021 ◽  
Vol 68 (4) ◽  
pp. 779-787
Author(s):  
Sahar M. AlMotwaa
Keyword(s):  
Cell Lines ◽  
Cancer Cell ◽  
Cancer Cell Lines ◽  
Chemotherapeutic Agents ◽  
Therapeutic Effects ◽  
Dependent Manner ◽  
Clove Oil ◽  
Dapi Staining ◽  
Cytotoxicity Studies ◽  
Mcf 7

The anticancer effects of chemotherapeutic agents may be accentuated, and their side effects minimized by combining them with essential oils in nanocarrier systems. This study aimed to incorporate ifosfamide (IF) into nanoemulsion-based clove oil (IF-CLV). The nano-emulsion (NE) formulas were characterized with Zetasizer. The cytotoxicity of the formulated NEs against cervical (HeLa) and breast (MCF-7) cancer cell lines was determined using MTT assay, light microscopy, and DAPI staining. The z – average diameters of NE-CLV and IF-CLV were 63.1±1.00 and 89.4±2.64 nm, while Zeta potential values were – 4.39±0.4 and – 11.65±1.1mV, respectively. Cytotoxicity studies revealed that relative to free IF, NE-CLV and IF-CLV were highly toxic on HeLa and MCF-7cells, in a dose-dependent manner. The half-maximal inhibitory concentration (IC50) values of NE-CLV against HeLa and MCF-7 have decreased 38 and 27 folds, while the corresponding IC50 values of IF-CLV have decreased 57 and 35 folds, respectively. These results suggest that the incorporation of IF into NE-based clove oil produces potent therapeutic effects against cancer cell lines.

scholarly journals The Arabian camel,Camelus dromedariusinterferon epsilon: functional expression,in vitrorefolding, purification and cytotoxicity on breast cancer cell lines MDA-MB-231 and MCF-7

2019 ◽  
Author(s):  
Manal Abdel-Fattah ◽  
Hesham Saeed ◽  
Lamiaa El-Shennawy ◽  
Manal Shalaby ◽  
Amira M. Embaby ◽  
...  
Keyword(s):  
Breast Cancer ◽  
Cell Lines ◽  
Cancer Cell ◽  
Breast Cancer Cell ◽  
Inclusion Bodies ◽  
Cancer Cell Lines ◽  
Breast Cancer Cell Lines ◽  
Dependent Manner ◽  
Arabian Camel ◽  
Mcf 7

AbstractThe current study highlights for the first time cloning, overexpression, purification, and assessing the cytotxcity of the novel interferon epsilon (IFNε), from the Arabian camelCamelus dromedarius, against two human breast cancer cell lines MDA-MB-231 and MCF-7. Full-length cDNA encoding interferon epsilon (IFNε) was isolated and cloned from the liver of the Arabian camel,C. dromedariususing reverse transcription-polymerase chain reaction. The sequence analysis of the camel IFNε cDNA showed a 582-bp open reading frame encoding a protein of 193 amino acids with an estimated molecular weight of 22.953 kDa. A BLAST search analysis revealed that theC. dromedariusIFNε shared high sequence identity with the IFN genes of other species, such asCamelus ferus,Vicugna pacos, andHomo sapiens. Expression of the camel IFNε cDNA inEscherichia coligave a fusion protein band of 22.73 kDa after induction with either isopropyl β-D-1-thiogalactopyranoside or lactose for 5 h. Recombinant IFNε protein was overexpressed in the form of inclusion bodies that were easily solubilized and refolded using SDS and KCl. The solubilized inclusion bodies were purified to apparent homogeneity using nickel affinity chromatography. We examined the effect of IFNε on two breast cancer cell lines MDA-MB-231 and MCF-7. In both cell lines, IFNε inhibited cell survival in a dose dependent manner as observed by MTT assay, morphological changes and apoptosis assay. Caspase-3 expression level was found to be increased in MDA-MB-231 treated cells as compared to untreated cells.

scholarly journals Isolation and Evaluation of Bioactive Compounds from Rheum emodi and their Anti-Inflammatory and Anticancer Properties

2021 ◽  
Vol 25 (06) ◽  
pp. 1161-1172
Author(s):  
Sang Koo Park
Keyword(s):  
Ethyl Acetate ◽  
Cell Lines ◽  
Cancer Cell ◽  
Ethyl Acetate Extract ◽  
Cancer Cell Lines ◽  
Flavonoid Compound ◽  
Dependent Manner ◽  
Tnf Α ◽  
Anti Inflammatory ◽  
Mcf 7

Rheum emodi Wall. ex Meissn is a popular medicinal herb having wide application in traditional medicine for treating of several diseases. The present study was aimed to identify and isolate phytochemicals present in ethyl acetate extract fraction of R. emodi and to evaluate the anticancer and anti-inflammatory activities of water/organic solvent fractions and isolated compounds of R. emodi rhizome extracts. Based on the structure, flavonoid compound i.e., Myricitrin (sym. Myricetin 3- rhamnoside), myricetin 3-galloylrhamnoside and myricetin were identified to be present in ethyl acetate extract. The molecular weight of compound 1 cannot be identified; while compound 5 remained unknown as there was not enough evidence to propose its structure. The isolated compounds and different solvent fractions were tested for their anticancer and antiinflammatory activities. Among Myricetins derivatives, particularly unknown compounds significantly induced the apoptosis and restrained the proliferation of cancer cell lines (A549 and MCF-7) and inhibited the LPS induced NO production (proinflammatory mediator), IL-6 activity, IL-1β and TNF-α (cytokines) activity in RAW 264.7 macrophages in a dose dependent manner and was effective even at lower concentration (50 µg/mL). Similarly, the higher concentration of aqueous and solvent fractions exhibited strong cytotoxic and anti-inflammatory activities. However, water and dichloromethane fractions were most effective in inhibiting the anticancer activities in A549 and MCF-7 cancer cell lines, respectively. At lower concentration (50 and 100 µg/mL), highest inhibition activity for NO, IL-6 and IL-1β was noted with ethyl acetate fractions and n-Hexane fractions; while water and n-Butanol (fractions) strongly inhibited the TNF-α activity at lower (100 µg/mL) and high (200 µg/mL) concentration, respectively. In conclusion, the isolated compounds from R. emodi rhizome extracts and its rhizome solvent fractions exhibit strong anti-cancer and anti-inflammatory activities and can be used to develop chemotherapeutics and anti-inflammation drugs. © 2021 Friends Science Publishers

Synthesis and anticancer activities of a novel class of mono- and di-metallic Pt(ii)(salicylaldiminato)(DMSO or Picolino)Cl complexes

2015 ◽  
Vol 44 (5) ◽  
pp. 2166-2175 ◽  
Author(s):  
Faiz-Ur Rahman ◽  
Amjad Ali ◽  
Rong Guo ◽  
Yun-Chang Zhang ◽  
Hui Wang ◽  
...  
Keyword(s):  
Cell Lines ◽  
Cancer Cell ◽  
Cancer Cell Lines ◽  
Cytotoxic Agents ◽  
Human Breast ◽  
Anticancer Activities ◽  
Mcf 7

Mono- and di-metallic Pt(ii)(salicylaldiminato)(DMSO or Picolino)Cl complexes as potential cytotoxic agents against tested human breast (MCF-7), liver (HepG2), lung (A549), colon (HCT116) and cervical (Hela) cancer cell lines.

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