Ultrastructure of splenic white pulp of the turtle, Mauremys caspica.
The ultrastructure of splenic tissue of non-immunized turtles, Mauremys cas[pica, shows two areas, namely, the white pulp which is lymphoid in nature, and the red pulp which is formed by cell cords and sinusoids, Between both areas there is always a marginal zone with gaps through which cells leak. In the white pulp, there are two blood vessel types; one with muscled walls, and the other showing thinner walls sheathed by reticular cells, Reticular cells constitute a network where there occur dendritic macrophages, lymphoblasts and small and medium lymphocytes. Mature plasma cells are scare in the white pulp.
D000818:Animals; D001158:Arteries / Q000648:ultrastructure; D005260:Female; D008214:Lymphocytes / Q000648:ultrastructure; D008264:Macrophages / Q000648:ultrastructure; D008297:Male; D008854:Microscopy, Electron; D009940:Organoids / Q000648:ultrastructure; D010950:Plasma Cells / Q000648:ultrastructure; D013154:Spleen / Q000098:blood supply / Q000648:ultrastructure*; D014426:Turtles / Q000033:anatomy & histology*