PKC Inhibition and Superoxide Release. Effects of PKC isozyme inhibitors (Control □ Gö6976/PKCα ■ hispidin/PKCβ ; and rottlerin/PKCδ) on PMA (3.5 × 10-6M)-stimulated superoxide release from circulating neutrophils. Oxidative activity was measured 18 hours after administering to ovalbumin (OA)-sensitized rats naïve bovine serum albumin (BSA) (n = 5), sensitizing OA antigen (n = 6), feG (n = 4), or OA + feG (n = 6). Oxidative activity was measured by determined by reduction of cytochrome C. The results are expressed as μmoles/min/106 neutrophils. Significance: * < Control; # > Control.