Effect of high- versus moderate-intensity exercise on lymphocyte subpopulation and proliferative response. - Nieman,D.C.; Miller,A.R.; Henson,D.A.; Warren,B.J.; Gusewitch,G.; Johnson,R.L.; Davis,J.M.; Butterworth,D.E.; Herring,J.L.; Nehlsen-Cannarella,S.L. (Int J Sports Med, 1994)