An image from a bone marrow smear showing four myelocytes (center) with both primary and secondary granules seen in a patient with a normal bone marrow (100X oil immersion).
An image from a bone marrow smear showing two orthochromic normoblasts (center-right) beside a polychromatic normoblast (center-left) seen in a patient with a normal bone marrow (100X oil immersion).
An image from a bone marrow smear demonstrating a pronormoblast (center) with a round nucleus and basophilic cytoplasm (100X oil immersion). A group of erythroid precursors are also found (top-right).