FIG 4.

Characteristics of wild-type and ϕXG4J particles in cells expressing a cloned A* gene. (A) Sedimentation profiles of extracts generated from WT- and ϕXG4J-infected cells with or without cloned gene A* induction (open and closed symbols, respectively). (B) Specific infectivity (PFU/A₂₆₀) and heat stability (% survival at t = 20) of purified particles from panel A. All values have been normalized to the wild type, and error bars represent the standard deviations of three replicates. (C) DNA isolated from purified particles from panel A. (D) DNA from the wild-type particles depicted in panel C run next to purified double-stranded RF ϕX174 DNA.