Time course changes in intramuscular leucine of rats fed either a 4-gram meal containing 20% energy from either whey protein isolate (), soy protein isolate (), Blend 1 () or Blend 2 (). Data are means ± SEM; n=5-6 animals/time point. *P<0.05, WP vs Blend 2 at 45 min. +P<0.05 WP is vs SP, Blend 1 & Blend 2 at 135 min. #P<0.05, WP and Blend 1 vs Blend 2 at 180 min. %P<0.05, WP vs Blend 2 at 300 min. Where there are no symbols, there is no significant difference between any groups at any given time point.