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Multiple alignment of protein sequences of gB of PCMV, HHV-6A, HHV-6B, and HHV-7. gB N-terminus, N-terminal part of gB of PCMV corresponding to R1, gB C-terminus, C-terminal part of gB of PCMV, corresponding to R2. The accession numbers are indicated. Dots represent missing amino acids and deletions. Arrows indicate related amino acids between PCMV and HHV-6A (black arrows, identical amino acids; red arrows, conserved amino acids, R=K, L=I=V, F=Y).
