attempts were made to elucidate the cause of the downward regulation of the splenic plaque-forming cell ( pfc ) response in akr/j and balb/c mice between days 4 and 7 after a single intravenous injection of 2,4,6 , trinitrophenyl- lys-ficoll ( tnp-f ) .
C0011389
plaque
C0016327
f