in haemodialysis patients , the plasma concentrations of glycine ( p less than 0.01 ) , hydroxyproline ( p less than 0.05 ) and proline ( p less than 0.10 ) were significantly increased , whereas the serine concentrations ( p less than 0.01 ) were decreased , compared with those of the healthy controls .
C0020388
hydroxyproline
C0033382
proline