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A comparative view of erythrocytes and thrombocytes from zebrafish (Danio rerio), xenopus (Xenopus laevis), chicken (Gallus gallus), or human (Homo sapiens) peripheral blood. Cells were smeared on glass slides and stained with May-Grünwald Giemsa. Photomicrographs were taken at 1000x magnification. Scale bar is 20 μm.
