Xie ZH, Gan P. Nucleolus-like bodies in the pineal gland of the adult yak (Bos grunniens).
J S Afr Vet Assoc 2013;
84:E1-3. [PMID:
23718144 DOI:
10.4102/jsava.v84i1.68]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2012] [Revised: 03/07/2013] [Accepted: 03/22/2013] [Indexed: 11/01/2022] Open
Abstract
The pineal glands of adult yak were studied electron microscopically. Nucleolus-like bodies (NLBs) were found mostly in the pinealocytes and the interstitial cells of the pineal glands of the yak. The NLBs were electron-dense, round or ovoid bodies with a diameter of 50 nm - 500 nm. Two types of granules were identified as melanin. These may correspond to different stages of a progressive storage of melanin. Rough endoplasmic reticula with abundant ribosomes were observed. There was no correlation between the number of NLBs and the sex of the animals.
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