THE PHILIPPINE WATER BUFFALO
THE PHILIPPINE WATER BUFFALO
THE PHILIPPINE WATER BUFFALO
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esembles closely that of the lymphoid organs, particularly<br />
the lymph node, and does not exhibit any structure typical<br />
of an endocrine gland. Its cellular organization presents no<br />
marked differences from that of the early postnatal thymuses<br />
of the bovine and other breeds of buffaloes.<br />
Keywords: cytoarchitectural pattern, thymus, Philippine<br />
carabao, Bubalus bubalis, ante-natal development<br />
*The Philippine Journal of Veterinary Medicine, 15(1&2):<br />
1-20, 1976.<br />
A-87<br />
HISTOLOGICAL AND HISTOCHEMICAL STUDIES<br />
ON <strong>THE</strong> ADRENAL MEDULLA OF <strong>THE</strong> CARABAO*<br />
C. S. Zamora, Assistant Professor, College of Veterinary Medicine<br />
University of the Philippines Diliman<br />
B. U. Alegado, Student<br />
Studies on the adrenal medulla of the carabao were<br />
undertaken to look into its general histological structure and<br />
to identify and locate its component epinephrine and<br />
norepinephrine secreting cells. The histological structure of<br />
the adrenal medulla of the carabao closely resembles that<br />
of the ox. Although an outer medullary zone composed<br />
chiefly of cords of columnar shaped cells and an inner<br />
medullary zone made up mainly of aggregates of polyhedral<br />
shaped cells were generally observed, an intermingling of<br />
the two types of parenchymal cells was also noted in<br />
several instances. Based on the results of the iodate reaction<br />
and differential fixation and staining technique, the two<br />
functional types of chromaffin cells were identified, namely:<br />
the epinephrine secreting cells located principally in the<br />
outer medullary zone and the norepinephrine secreting<br />
cells distributed mainly in the inner medullary zone.<br />
Keywords: histological study, histochemical study, adrenal<br />
gland, carabao<br />
*The Philippine Journal of Veterinary Medicine, 6(1&2):<br />
145-154, 1967.<br />
A-88<br />
SEX DIFFERENCE IN <strong>THE</strong> MORPHOLOGY OF<br />
NEUTROPHILS IN <strong>THE</strong> <strong>PHILIPPINE</strong> CARABAO*<br />
C. S. Zamora, Assistant Professor, College of Veterinary Medicine<br />
University of the Philippines Diliman<br />
E. M. Niones, Instructor, College of Veterinary Medicine, University of the<br />
Philippines Diliman<br />
Blood films from 106 apparently healthy carabaos of both<br />
sexes were examined for the presence of the sex chromatin<br />
in neutrophils. Two forms of nuclear sex appendage were<br />
ANATOMY<br />
observed in the neutrophils of female carabaos: the<br />
“drumstick” appendage, present in 1-4% of the cells, and<br />
the “sessile” form, present in 8-11% of the cells. Such<br />
structures were rarely seen in the neutrophils of males.<br />
The “drumstick” appendage was occasionally seen in the<br />
nucleus of female eosinophils. Based on this study, sexual<br />
dimorphism in the morphology of the neutrophils can be<br />
used as a basis for sex differentiation and as a valuable aid<br />
in the study of intersexuality and certain sexual<br />
abnormalities in carabaos.<br />
Keywords: sex difference, morphology, neutrophils,<br />
Philippine carabao<br />
*The Philippine Journal of Veterinary Medicine, 7(1&2):<br />
92-100, 1968.<br />
35