However, it is difficult to speculate as to whether the observed increase in proliferation with recovery serum from healthy children is conducive to greater or impaired muscle development given that (1) the levels of IL‐6 observed in healthy children were significantly lower than the CF group at all time points including at the recovery time point, (2) the elevated inflammatory state is acute, and (3) the inflammatory state was induced by exercise and not by a chronic infection or disease. The gene discussed is IL6; the disease is cystic fibrosis.