lymphokine-rich supernates from normal human peripheral blood mononuclear cells , stimulated by the mitogen phytohemagglutinin , have been shown to cause enhanced collagen accumulation by human embryonic lung fibroblasts ( wi-38 ) , as measured by hydroxyproline content of fibroblast monolayers , [ 14c ] proline incorporation into soluble collagen and collagenase release of radioactivity in supernates and monolayers of cultures incubated with [ 14c ] proline .
C0020388
hydroxyproline
C0033382
proline