Evidence for the existence of W3/13+ monocytes in the rat

Rat blood mononuclear cells were studied with W3/13, OX19, and W3/25 monoclonal antibodies in a dual staining procedure. Cells recognized as W3/13+ OX19- W3/25+ showed a high light scatter pattern were plastic adherent and exhibited spreading, and were identified as monocytes when stained with May-Grunwald-Giemsa. This evidence suggests that at least a subpopulation of monocytes/macrophages are W3/13+.