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. 1998 Apr;72(4):3300–3306. doi: 10.1128/jvi.72.4.3300-3306.1998

FIG. 3.

FIG. 3

Replication kinetics of recombinant viruses carrying pretherapy (□) or postresistance (⧫) HIV protease sequences in MT4 cells (A) and HUT78 cells (B). MT4 and HUT78 cells were infected with HIV-1 p24-normalized amounts of particles from recombinant viruses carrying pretherapy or postresistance protease sequences from ritonavir-treated patients 202, 401, and 402 and from saquinavir-treated patient 246. The kinetics of virus production in the infected cultures were monitored over time with an HIV-1 p24 ELISA.