So...I am doing IHC stains with Caspase3 and Ki-67. Does anyone know a positive control for both of these at the same time? Will tonsil pop positive for both?? If not, what are good controls for each of them? Thanks Sarah Goebel-Dysart, BA, HT(ASCP) Histotechnologist Mirna Therapeutics 2150 Woodward Street Suite 100 Austin, Texas 78744 (512)901-0900 ext. 6912