Scientists think that people with certain types of HLA antigens are more likely to develop insulin -dependent diabetes . The HLA antigens are also responsible for histocompatibility reactions. A leukocyte that is able to stage an immune response. See also granulocyte, lymphocyte, macrophage and monocyte . A huge cell in the bone marrow that produces blood platelets .
Melanocytes are transparent cells with dendrites .
A type of large, round leukocyte that engulfs and breaks down debris and invading cells. Monocytes are formed in bone marrow and have round or kidney-shaped nuclei. A motile cell produced by and found in the bone marrow which develops into granular leukocytes . Any cell that engulfs and devours another. A type of non-granular, basophilic leukocyte that produces antibodies .