FIG. 3.

Composition of virus-like particles in the absence of minor envelope proteins. Radiolabeled virus-like particles were generated and processed as described in the legend to Fig. 2. After sedimentation, virus-like particles were resuspended in PBS and subjected to affinity purification. (A) Purification of particles with MAb anti-GP₃ (α-GP₃). Panels 1 and 2 show the results of two representative experiments. (B) Purification of particles with MAb anti-GP₄ (α-GP₄). (C) Purification of particles with MAb anti-M (α-M).