Tendons and ligaments are anatomically distinct but overlap in molecular and morphological features—a comparative study in an ovine model

2007 ◽  
Vol 25 (4) ◽  
pp. 458-464 ◽  
Author(s):  
Adam P. Rumian ◽  
Andrew L. Wallace ◽  
Helen L. Birch
Keyword(s):  
Comparative Study ◽  
Morphological Features ◽  
Ovine Model

Cell Block Optimization: A Comparative Study of Quality Variables in 4 Different Cell Block Methods

2021 ◽  
pp. 1-7
Author(s):  
Marsali Newman ◽  
Matthew Walsh ◽  
Rosemary Jeffrey ◽  
Richard Hiscock
Keyword(s):  
Comparative Study ◽  
Processing Time ◽  
Morphological Features ◽  
Cell Block ◽  
Total Processing Time ◽  
Block Methods ◽  
Molecular Studies ◽  
Agar Method ◽  
Md Anderson ◽  
Ancillary Studies

<b><i>Objective:</i></b> The cell block (CB) is an important adjunct to cytological preparations in diagnostic cytopathology. Optimizing cellular material in the CB is essential to the success of ancillary studies such as immunohistochemistry (IHC) and molecular studies (MS). Our aim was to identify which CB method was most suitable in a variety of specimen types and levels of cellularity. <b><i>Study Design:</i></b> We assessed 4 different CB methods, thrombin clot method (TCM), MD Anderson method (MDAM), gelatin foam method (GFM), and agar method (AM), with descriptive observations and ranking of the methods based on quantity of cells and morphological features. <b><i>Results:</i></b> TCM performed best in ranking for both quantity of cells and morphological features, followed by MDAM, GFM, and AM. Lack of adjuvant in the MDAM resulted in some unique morphological advantages which, however, also resulted in inconsistent performance. In low cellularity cases insufficient cells were frequently identified on slides from MDAM and AM CBs. Technique touch time was similar for all methods, with total processing time being shortest for TCM followed by MDAM, GFM, and AM. <b><i>Conclusions:</i></b> TCM was the most robust CB technique, retaining high scores for ranking of quantity and morphology in a variety of specimen cellularities and specimen types.

Surface changes in the embryonic interdigital epithelium during the formation of the free digits: a comparative study in the chick and duck foot

Development ◽  
1982 ◽  
Vol 69 (1) ◽  
pp. 251-263
Author(s):  
J. M. Hurle ◽  
E. Colvee
Keyword(s):  
Comparative Study ◽  
Morphological Features ◽  
The Other ◽  
Amniotic Cavity ◽  
Other Hand ◽  
Polygonal Shape ◽  
Surface Changes

The formation of the free digits of the chick is accompanied by conspicuous surface changes of the interdigital ectoderm. These changes were much less pronounced or absent in the duck. As early as the interdigital grooves were detected in the chick, the morphological features of the ectodermal cells changed from a polygonal shape and flattened appearance to a rounded shape and bulging appearance. These changes were not present in the webbed foot of the duck. On the other hand the development of the interdigital commissures was accompanied by the formation of ectodermal ridges consisting of an accumulation of rounded cells which were in some cases in course of detachment to the amniotic cavity. These ridges were very prominent in all the interdigital commissures of the chick. In the duck they were less pronounced and were only present in the first and third commissure. From these results it is suggested that in addition to the well-known interdigital mesenchymal necrotic process (INZ) the ectodermal tissue of the interdigits might also be actively involved in the formation of free digits.

Segmentation of the Haematoxylin and Eosin Stained Muscle Cell Images—A Comparative Study

2021 ◽  
Vol 11 (6) ◽  
pp. 1517-1526
Author(s):  
Zihao Wang ◽  
Liju Yin ◽  
Shuai Mao ◽  
Zhenzhou Wang
Keyword(s):  
Comparative Study ◽  
Muscle Cell ◽  
Biomedical Research ◽  
Muscle Cells ◽  
Morphological Features ◽  
Cell Segmentation ◽  
Cross Sectional ◽  
Segmentation Methods ◽  
Automatic Methods ◽  
Automated Methods

The effective detection of muscle cells, the accurate counting of their numbers and the analysis of their morphological features have great importance in biomedical research. At present, the quantification of muscle cell and the computation of their cross-sectional areas (CSA) are still manual or semi-automated, and with the increase of the image number, the manual or semi-automated methods might become intractable. Hence, the automatic methods are very desirable, which motivated the developments of many muscle cell segmentation methods. In this paper, three methods, SDDM, CELLSEGM and SMASH are compared and evaluated with 100 images with over 6000 cells. The Dices computed by SDDM, CELLSEGM and SMASH are 97.38%, 89.85% and 90.08% respectively. The average differences between the calculated cross-sectional areas and the ground truths by SDDM, CELLSEGM and SMASH are 5.14%, 10.76% and 7.97% respectively.

On the Species of Diphyllobothrium occurring in Birds, and their Relation to Man and other Hosts

1949 ◽  
Vol 23 (3-4) ◽  
pp. 107-126 ◽  
Author(s):  
Stanislaw Markowski
Keyword(s):  
Comparative Study ◽  
Host Adaptation ◽  
Morphological Features ◽  
Valid Species ◽  
Diphyllobothrium Dendriticum

A comparative study has been made of certain species of Diphyllobothrium which are primarily parasites of birds, but which have been obtained from man and other hosts, both naturally and experimentally. As a result of this work it appears that only two valid species are known in birds, namely: Diphyllobothrium dendriticum (Nitzsch, 1824) and D. ditremum (Creplin, 1825). These species differ markedly from each other in certain morphological features and there appears to be a noticeable difference in their host-adaptation, inasmuch as D. ditremum occurs only in birds belonging to the families Phalacrocoracidae, Ardeidae, Colymbidae and Anatidae, while D. dendriticum occurs naturally in birds belonging to the Laridae and other families, and experimentally also in mammals.

A COMPARATIVE STUDY OF THE HAEMOCYTES (BLOOD CELLS) OF COCKROACHES (INSECTA: DICTYOPTERA: BLATTARIA), WITH A VIEW OF THEIR SIGNIFICANCE IN TAXONOMY

1972 ◽  
Vol 104 (3) ◽  
pp. 309-348 ◽  
Author(s):  
J. W. Arnold
Keyword(s):  
Comparative Study ◽  
Blood Cells ◽  
Morphological Features ◽  
Primitive Group ◽  
Insufficient Evidence ◽  
Taxonomic Relationships ◽  
Modern Species

AbstractHaemocytes are described and illustrated for 16 species of cockroaches, and data are given on haemocyte size and numbers. Each family in the suborder Blattaria is represented. In all of the species, the haemocyte complex comprises plasmatocytes and granular haemocytes in addition to mainly germinal elements, the prohaemocytes. Spherule cells, a distinctive form of granular haemocyte, occur in most "modern" species (superfamily Blaberoidea), but are absent from most species in the more primitive group (superfamily Blattoidea). Taxonomic relationships at other levels are reflected particularly in morphological features of granular haemocytes. Although the haemocyte complex alone offers insufficient evidence for systematic arrangement, it provides additional characters for classifying species.

COMPARATIVE STUDY OF SOME BIOCHEMICAL AND MORPHOLOGICAL FEATURES OF ORIGANUM VULGARE L. CHEMOTYPES

2018 ◽  
pp. 86-98
Author(s):  
Kh.A. AMERKHANOV ◽  
◽  
F.G. KAYUMOV ◽  
N.P. GERASIMOV ◽  
R.F. TRET’YAKOVA ◽  
...  
Keyword(s):  
Comparative Study ◽  
Morphological Features ◽  
Origanum Vulgare
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