title: [Red bone marrow of the lake frog (Rana ridibunda) and the nimble lizard (Lacerta agilis)].
abstract: The purpose of the present investigation was to study the morpho-physiology of the red bone marrow of the lake frog (Rana ridibunda, Pall., 1771) and the nimble lizard (Lacerta agilis, Linnaeus, 1758) and also to detect the peculiar features of the generations of formed cellular elements in these animals. The research was conducted on sexually mature female frogs and lizards (30 animals of each species).The bone marrow of the investigated animals was taken for the analysis from the tubular limb bones and studied using physiological (hematological) and histological methods. The basic features of localization and structure of hemopoietic tissue were identified. For both groups of animals, blood cells of all types were formed in the red bone marrow, and, in both frogs and lizards, the greatest part of the forming cells belonged to erythrocytes. The second place quantitatively was occupied by the granulocytopoietic cells, and the third one--by agranulocytopoietic cells. Thrombocytopoietic cells were found in the least quantities, but their percentages were slightly different in the two species studied.
mesh_terms: D000818:Animals; D001853:Bone Marrow / Q000033:anatomy & histology* / Q000502:physiology*; D005260:Female; D006412:Hematopoietic Stem Cells / Q000166:cytology* / Q000502:physiology*; D008116:Lizards; D011895:Rana ridibunda; D013045:Species Specificity