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(A) Western blot analysis of envelope proteins expressed in COS-7 cells transfected with proviral DNA of ConB or Arg-298 mutants using a HIV-1 positive human serum. Both gp160 and gp120 are indicated. (B) Western blot analysis of envelope proteins incorporated into virions of ConB and Arg-298 mutants. Viral lysates prepared from ConB, 298RA, 298RK, 298RE, 298RL, and 298RQ viruses were reacted with a HIV-1 positive human serum. Molecular mass markers are shown in lane MW.
