6 ml Blocking Solution Reagent 1 (ready-to-use) 6 ml PostBlock Reagent 2 (ready-to-use) 6 ml AP-Polymer (Mouse/Rabbit) Reagent 3 (ready-to-use) Materials required but not supplied Positive und negative control tissue Xylene or suitable substitutes Ethanol, distilled H2O Reagents for enzyme digestion or heat pre-treatment Wash buffer PBS or TBS PAP Pen Primary antibody (user-defined) Primary antibody diluent Negative control reagent Chromogenic substrate Counter stain solution Mounting medium Cover slips