ISSN:
0003-276X
Keywords:
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Medicine
Notes:
The left adrenal in adult coyotes (25) was heavier than the right (P 〈 0.005). Adrenal weights of pups (3 males and 3 females) were not different (P 〉 0.05). Absolute adrenal weight in adult females was greater than in adult males (P 〈 0.01). In the six pups which were under seven months old the adrenals of males were heavier than in females (P 〈 0.025).Changes in the widths of adrenocortical zones were analyzed with regard to maturity. The width of the glomerular zone in immature coyotes was not different from mature animals. Immature males had a wider fasciculata than immature females (P 〈 0.01) and mature males (P 〈 0.01). The reticular zone exhibited the greatest relative growth with maturity in both sexes.Zona glomerular cells were columnar epithelia with oval nuclei which contained one or two nucleoli. Fascicular cells were polyhedral shaped with central nuclei which contained as many as three nucleoli. The zona reticularis was characterized by anastomosing cords. Nuclei were highly variable in size. Nucleoli were often dispersed around the nuclear membrane. Lipids were stored as large irregularly-shaped droplets in the fasciculata and as small, round droplets in the reticularis.Cortical cells from coyotes of all ages showed the presence of histones; all zones reacted positively. Nucleoli and chromatin granules gave intense reactions, suggesting close association between histones and nuclear RNA and DNA.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/ar.1091690403
