Figure 6

Indirect immunodetection of PECAM-1 in in vitro unstimulated human PBLs using the APAAP method. Cytospins were stained with a mouse monoclonal antibody directed against human PECAM-1 followed by the APAAP immunodetection. The heavy arrows show neutrophil granulocytes but also mononuclear cells (thin arrows), which were PECAM-1 positive. Original magnification: × 200. Scale bar=100 μm.