Degree Name

Master of Science (MS)

Semester of Degree Completion

1975

Thesis Director

Eugene B. Krehbiel

Abstract

A total of 26 pineal glands from the white-tailed deer were histologically examined. Five different stains were utilized to determine various cell types present in pineal tissue. Connective tissue septa divide the pineal gland into incompletely separated lobules which are supplied by a very extensive vascular system. The pinealocyte is the most numerous cell in the gland and is most easily recognized by a prominent nucleus approximately 6-8 microns in diameter. The pinealocyte cytoplasm contains many minute granules. A distinct difference was noted in the histology of the oldest age deer pineal (age 7 years) when globular granules were observed throughout the gland. The granules appeared to be corpora acervuli common to pineal glands of ageing mammals.

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