∞ generated and posted on 2016.01.09 ∞
White blood cell types known as dendritic cells, lymphocytes, and monocytes.
Agranulocytes obtain their name from the "lack" of presence of "" within their cytoplasms, though it is not that granules are lacking but instead that these granules, as found in agranulocytes, are not seen as observed via light microscopy. Contrast granulocytes.
Note that the monocytes mature into macrophages and that dendritic cells play roles similar to those of macrophages (and in addition also may be products of monocyte maturation).
Both of these cell types, macrophages and dendritic cells, are examples of antigen-presenting cells. Antigens, in turn, are presented to lymphocytes, which serve as the cellular foundation of adaptive immunity.