In:
Canadian Journal of Zoology, Canadian Science Publishing, Vol. 47, No. 1 ( 1969-01-01), p. 89-94
Abstract:
Sections of thymuses from rabbits aged 3 days, 2–3 weeks, and 4 weeks, from young adults (normal and parasitized with coccidiosis), and from old adults were examined for the distribution of eosinophils and heterophils. Developmental and mature stages or lobated and mononuclear eosinophils and lobated heterophils were found. The two lobated granulocytic series, showing transformational stages from myelocyte (macromyelocyte) to lobed forms, as in the bone marrow, were present in the connective tissue of the capsule, interlobular septa, and trabeculae, in the peripheral zone of the cortex, and in the medulla. They were usually found in nests of cells which occasionally showed mitosis. The mononuclear eosinophils, the micromyelocytic line, were found almost exclusively in the medulla, never in nests nor in mitosis. The association of granulocytes with Hassall's corpuscles was variable; granulocytes were seen within some corpuscles, in the vicinity of others, or were not present near others. Thymuses from all rabbits showed granulocytes. The thymuses of the 3-day-old rabbits contained the least concentration of lobed granulocytes and no or very few mononuclear eosinophils. Greatest concentrations of granulocytes were found in old rabbits and parasitized animals. Some possible functions for granulocytes in the thymus are presented.
Type of Medium:
Online Resource
ISSN:
0008-4301
,
1480-3283
Language:
English
Publisher:
Canadian Science Publishing
Publication Date:
1969
detail.hit.zdb_id:
1490831-1
SSG:
12
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