๐”– Bobbio Scriptorium
โœฆ   LIBER   โœฆ

The somatic chromosomes of the opossum (Didelphis virginiana)

โœ Scribed by William E. Hoy Jr.; W. C. George

Publisher
John Wiley and Sons
Year
1929
Tongue
English
Weight
1010 KB
Volume
47
Category
Article
ISSN
0362-2525

No coin nor oath required. For personal study only.

โœฆ Synopsis

Abstract

There are eleven pairs of chromosomes in the somatic cells of the opossum.

The sex chromosomes are of the xโ€x type in the female and the xโ€y type in the male.

The number and type of the chromosomes are constant in the wide variety of tissues and organs studied, except that one dividing giant cell of the spleen showed an 8n number of chromosomes.

The arrangement of the chromosomes in equatorial plates is that of an autosomal ring surrounding the centrally located sex chromosomes.

๐Ÿ“œ SIMILAR VOLUMES

Studies of a primitive mammalian spleen,
Studies of a primitive mammalian spleen, the opossum (Didelphis virginiana)
โœ Thomas G. Hayes ๐Ÿ“‚ Article ๐Ÿ“… 1968 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 627 KB

Light microscopic sections of the adult opossum (Didelphis virginiana) spleen were observed to lack venous sinuses; this primitive mammalian spleen may be classified as non-sinusal in nature. In the spleen of the opossum, the capillary segments of the penicillar arteries lacked ellipsoid sheaths cha

The basilar pontine gray of the opossum
The basilar pontine gray of the opossum (Didelphis virginiana). I. Morphology
โœ James S. King; George F. Martin; Thomas P. Biggert ๐Ÿ“‚ Article ๐Ÿ“… 1968 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 518 KB

The basilar pontine nuclei were described for the opossum in Nissl stained, serial, transverse sections, and named (dorsal, ventral, medial, and lateral) with reference to the pontine pyramidal bundle. The details of neuron morphology were determined by employing Nissl stains and the Golgi technique