Johnson EH, Al-Amri ASH, Al-Abri M, Al-Marzooqi W. Ultrastructural morphology of lymphocytes of the Arabian oryx (Oryx leucoryx).
Anat Histol Embryol 2020;
49:425-429. [PMID:
32053854 DOI:
10.1111/ahe.12540]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 11/06/2019] [Accepted: 12/28/2019] [Indexed: 11/29/2022]
Abstract
An ultrastructural study on the lymphocytes from peripheral blood samples from 20 healthy adult Arabian oryx (Oryx leucocoryx) was undertaken. Small lymphocytes ranged in size from 2-3.5 µm and exhibited the typical repertoire of organelles found in small lymphocytes of other animals but showed no evidence of azurophilic granules. Medium-sized lymphocytes were 5-6.5 µm in diameter and occasionally demonstrated azurophilic granules. Microvilli were a common finding of lymphocytes. Of particular interest was the presence of multivesicular bodies, which have previously only been described in human lymphocytes. Both small- and medium-sized lymphocytes of the Arabian oryx were smaller than those reported for other animals. Small lymphocytes exhibited short, thick microvilli, whereas medium-sized lymphocytes had long thin microvilli, a single nucleolus and occasionally azurophilic granules and multivesicular bodies.
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