Does anyone have a protocol or a reference or know of a book that has a protocol for benzidine or DAB staining for detection of red blood cells/hemoglobin in slides? Thanks, Sharon -- Sharon Cooperman <scoop <@t> mail.nih.gov> NIH, NICHD, CBMB 301.435-7735 Building 18T, room 101 301.402-0078 fax Bethesda, MD 20892