monoblast

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monoblast

[′män·ō‚blast]
(histology)
A motile cell of the spleen and bone marrow from which monocytes are derived.
References in periodicals archive ?
In mammals, mononuclear phagocytes differentiate in bone marrow from stem cells- monoblasts, promonocytes and monocytes.
Peroxidase activity was observed ultrastructurally in the circulating blood of Phrynops hilarii, identifying monoblasts, promonocytes, monocytes and macrophages.
In mammals, the monoblast-promonocyte-monocyte differentiation occurs in bone marrow, with monoblasts and promonocytes being detected in circulating blood only in specific pathological situations (Van Furth, 1989, 1992).