Med. Weter. 69 (11), 674-677, 2013

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Snarska A., Krystkiewicz W., Rękawek W.
Assessment of leukocytes in the bone marrow of healthy Holstein-Friesian cows
Similarly to the production of red blood cells, the production and development of leukocytes takes place in the bone marrow in the process of hematopoiesis. The key stages in the development of leukocytic cell lines are: neutrophilic, eosinophilic and basophilic granulopoiesis, monocytopoiesis, lymphopoiesis and megakaryopoiesis. Leukocytes produced at various developmental stages are characterized by differently shaped nuclei, the presence or absence of nucleoli, and variations in cytoplasm staining. The experiment was carried out on 10 clinically healthy HF cows. Bone marrow aspirate smears stained by the MGG method were analyzed. The study found significant differences in the number, size, and staining intensity of individual myeloid cell lines.
Key words: hematopoiesis, granulopoiesis, megakaryocyte, monocyte.