Figure 2. Rabbit tibialis anterior muscles were subjected to an injurious eccentric exercise protocol after 1 of 3 treatments. *Note the significant reduction ( P < .01) in torn fibers postexercise in the M1/70 group (blocked respiratory burst from neutrophils) compared with the 2 control groups exposed to saline and immunoglobulin G (IgG), with intact neutrophil function and burst not blocked. Used with permission from the American Physiological Society. ⁵⁸ .