ag processing by ta3 cells was unaffected 3 h after abrogation of protein synthesis with cycloheximide , suggesting that newly synthesized i-a is not necessary for ag processing in ta3 cells ( post-synthetic processing and transport of i-a to the plasma membrane were complete by 2 h in ta3 cells with or without cycloheximide , as assessed by sequential immunoprecipitation of surface and intracellular i-a ) .
C0007603
plasma membrane
C0007634
cells