Figure 4. Superoxide dismutase decreases muscle lysis in neutrophil co-cultures.

Cultures contained 10 000 neutrophils mm⁻². Cultures received no exogenous activator (HBSS) or were activated with PMA. Black bar = no SOD. Hatched bar = 500 U ml⁻¹ SOD. * Significantly different from no SOD at P < 0.01. Bars = s.e.m.n = 6 for each group.