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Anatomy Atlases: Atlas of Microscopic Anatomy: Section 1 - Cells Atlas of Microscopic Anatomy: Section 4 - Blood

Plate 4.55: Bone Marrow; Peripheral Blood

Ronald A. Bergman, Ph.D., Adel K. Afifi, M.D., Paul M. Heidger, Jr., Ph.D.
Peer Review Status: Externally Peer Reviewed


Plate 4.55: Bone Marrow; Peripheral Blood

A. Human, air-dried marrow smear, Wright's stain, 1416 x.
B. Human, air-dried blood smear, brilliant cresyl blue, 1416 x.


Polychromatophilic erythroblasts (rubricytes): Derivatives of basophilic erythroblasts (prorubricytes). Dense nuclear chromatin with polychromatophilic cytoplasm owing to a declining RNA content and an increase in newly synthesized hemoglobin.

Reticulocytes: Immature red blood cells seen in the circulating blood. Clumping of ribosomes gives them a reticulated appearance.

Platelets: Also called thrombocytes, these are minute round or ovoid structures. They are important in blood coagulation and are derived from bone marrow megakaryocytes.

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