motility and atp concentration were significantly correlated in egg-yolk -- tris ( r = 0.530 , p less than 0.05 ) , skim milk -- egg yolk ( r = 0.754 , p less than 0.01 ) , egg yolk -- citrate -- glucose ( r = 0.784 , p less than 0.01 ) and citric acid -- whey ( r = 0.551 , p less than 0.05 ) .
C0008857
citrate
C0055819
citric acid