THE KARYOTYPE OF THE LONG TAILED WEASEL MUSTELA FRENATA NOVEBORACEISSIS EMMONS

1968 ◽  
Vol 10 (2) ◽  
pp. 390-394 ◽  
Author(s):  
Parvathi K. Basrur
Keyword(s):  
Tissue Culture ◽  
Sex Chromosomes ◽  
Culture Methods ◽  
Southern Ontario ◽  
Total Complement

The somatic chromosomes of the long tailed weasel, Mustela frenata from Southern Ontario were studied using tissue culture methods. The autosomes include 11 pairs of biarmed elements ranging from 2.0 to 8.15 in per cent total complement length and 9 pairs of single armed elements ranging from 3.2 to 5.00. Five of the biarmed chromosomes are metacentrics (M) ranging in arm ratio from 1.2 to 1.35 and the remaining six are submetacentrics (S) varying in arm ratio from 1.7 to 3.5. The sex chromosomes are biarmed, the X being the second smallest of the S series, whereas the Y is the smallest.

CYTOTAXONOMY OF BOMBYLIIDAE (DIPTERA)

1973 ◽  
Vol 15 (1) ◽  
pp. 21-37 ◽  
Author(s):  
J. W. Boyes ◽  
G. E. Shewell
Keyword(s):  
Sex Chromosomes ◽  
Chromosome Numbers ◽  
Total Complement ◽  
Variable Group

The karyotypes of 34 species of Bombyliidae are described, some in greater detail than others. It is suggested that two subfamilies, the Bombyliinae (for Homoeophthalmae) and Anthracinae (for Tomophthalmae) be recognized. In the Bombyliinae, one species has 2n = 8, one 2n = 10, three 2n = 12 and one 2n = 14. In the Anthracinae, two species have 2n = 10, four 2n = 12, six 2n = 14, three 2n = 16 and thirteen 2n = 18. Seventeen complements of Bombyliinae averaged 41.4 μ in total complement length (TCL) and thirtyeight of Anthracinae averaged 46.6 μ; so the 55 complements of the Bombyliidae averaged 44.9 μ in TCL, the complements with lower chromosome numbers averaging less than those with higher numbers. Thus Bombyliinae species have lower chromosome numbers and shorter complements than Anthracinae species which tend to have longer metacentric sex chromosomes. Thus both morphologically and karyotypically the Bombyliinae appear to be more advanced whereas the Anthracinae are a more primitive but highly variable group of species.

Tests by Tissue Culture Methods on the Nature of Immunity Transplanted Skin

1948 ◽  
Vol s3-89 (7) ◽  
pp. 239-252
Author(s):  
P. B. MEDAWAR
Keyword(s):  
Tissue Culture ◽  
Cell Division ◽  
Epidermal Cell ◽  
Cell Suspensions ◽  
Acquired Immunity ◽  
Culture Methods ◽  
Division Frequency

The transplantation of skin from one rabbit to another elicits a reaction that conforms in main outline with that of an actively acquired immunity. The experiments described in this paper were designed to test the hypothesis that the regression of such grafts is secured by the action of antibodies demonstrable in vitro. Skin from adult rabbits has therefore been cultivated in the presence of serum and growing mesenchymal tissues derived solely from rabbits heavily and specifically immunized against it. Immune sera and tissues are without effect on the survival, cell-division frequency and migratory activities of explanted skin, and agglutinins for epidermal cell suspensions are not demonstrable in immune sera. With certain stated qualifications, it has therefore been concluded that the occurrence of free antibodies is not a sufficient explanation of the regression of skin homografts in vivo.

Regeneration of picea Omorika And pinus Heldreichii By Tissue Culture Methods

1998 ◽  
pp. 469-472
Author(s):  
S. Budimir ◽  
D. Stojičić ◽  
LJ. Ćulafić ◽  
R. Vujičić
Keyword(s):  
Tissue Culture ◽  
Culture Methods ◽  
Picea Omorika

Developing blast-resistant lines in rice through tissue culture methods

2008 ◽  
pp. 513-514
Author(s):  
J. -S. Ryu ◽  
J. -M. Choi ◽  
Y. -H. Kang ◽  
S. -Y. Kim
Keyword(s):  
Tissue Culture ◽  
Culture Methods ◽  
Resistant Lines

Diagnostic performance of swab PCR as an alternative to tissue culture methods for diagnosing infections associated with fracture fixation devices

Injury ◽  
2016 ◽  
Vol 47 (7) ◽  
pp. 1421-1426 ◽  
Author(s):  
Mohamed Omar ◽  
Eduardo M. Suero ◽  
Emmanouil Liodakis ◽  
Moritz Reichling ◽  
Daniel Guenther ◽  
...  
Keyword(s):  
Tissue Culture ◽  
Fracture Fixation ◽  
Diagnostic Performance ◽  
Culture Methods ◽  
Fixation Devices
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