Fig. 1From: Establishment of a sticky, large, oval-shaped thrombocyte cell line from tree frog as an ancestor of mammalian megakaryocytesSeasonal changes in hematopoiesis in the bone marrow. Frozen sections of frog tibias obtained in July (a, b) or in February (c, d) were double-stained with Oil Red O and hematoxylin. Scale bars indicate 500 µm (a, c) or 20 µm (b, d). Adipocytes (a), granulocytes (g) and erythrocytes (e) are indicatedBack to article page