[Morpho-functional characteristic of the spleen in Baikal seal (Pusica sibirica Gmel.) pups].
Using the methods of light microscopy, the histological structure of the spleen in Baikal seal (Pusica sibirica Gmel.) pups was studied for the first time. It was found that in Baikal seal the spleen is characterized by highly developed supporting elements (thick capsule and numerous branching trabeculae), which are rich in smooth myocytes. By the age of 2-4 weeks, all the structures of white pulp were formed, however, presence of only a few lymphoid nodules with the absent germinal centers indicates that functionally these structures are still immature. Presence of immature forms of granulocytic, erythroid and megakaryocytic lineage shows that the myelopoiesis in Baikal seal spleen continues in postnatal period.
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D000818:Animals; D010872:Caniformia / Q000033:anatomy & histology* / Q000254:growth & development; D008198:Lymph Nodes / Q000254:growth & development / Q000648:ultrastructure; D032342:Muscle Cells / Q000648:ultrastructure; D038042:Myelopoiesis; D013154:Spleen / Q000254:growth & development / Q000648:ultrastructure*