azurophilic granule


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azurophilic granule

A large, coarse, blue-purple membrane-bound organelle in progranulocytes, myelocytes and neutrophils, which acts as a reservoir for digestive and hydrolytic enzymes before delivery to a phagosome.

azurophilic granule

A small red or reddish-purple granule that easily takes a stain with azure dyes. Found in lymphocytes and monocytes, it is inconstant in number, being present in about 30% of the cells.
See also: granule
References in periodicals archive ?
Blasts with coarse azurophilic granules are seen in granular ALL and myeloid leukemia with basophilic differentiation, i.
In the two cases described here, coarse azurophilic granules were present in the blasts, both in peripheral blood smear and bone marrow, which were negative for myeloperoxidase and positive for TB.