Abstract
Complete blood counts and sternal bone marrow aspirates were obtained from healthy adult llamas ranging in age from 2.5 to 8.4 years. Megakaryocyte numbers and erythroid and myeloid series maturation and morphology appeared similar to other mammalian species. The particles contained 50 to 75% marrow cells with the remainder composed of lipocytes and stromal cells. In samples with numerous particles and adequate cellularity, M/E ratios ranged from 0.9 to 2.9. Samples with higher white blood cell counts and fewer particles had higher M/E ratios. Eosinophils comprised 14.3% of the myeloid series which is higher than other domestic mammals. Hemosiderin granules were numerous in marrow particles.
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