## Abstract There are eleven pairs of chromosomes in the somatic cells of the opossum. The sex chromosomes are of the xโx type in the female and the xโy 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 dividin
Reticulospinal fibers of the opossum, Didelphis virginiana I. Origin
โ Scribed by Robert L. Beran; George F. Martin
- Publisher
- John Wiley and Sons
- Year
- 1971
- Tongue
- English
- Weight
- 947 KB
- Volume
- 141
- Category
- Article
- ISSN
- 0021-9967
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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
Spinocerebellar axons have been studied extensively in placental mammals, but there have been no full reports on their origin, laterality, or spinal course in any marsupial. We have used the North American opossum (Didelphis virginiana) to obtain such information and to ask whether any spinocerebell
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