FIG. 5.

Reciprocal immunoprecipitations of UL28 mutant viruses bearing nonlethal mutations. CV-1 cells were mock infected (lane 1) or infected with the indicated virus above each lane (lanes 2 to 5). Reciprocal immunoprecipitations were performed using anti-UL28 antisera (A), anti-UL15 antisera (B), or anti-UL33 antisera (C), followed by immunoblotting with anti-UL15, -UL28, or -UL33 antisera as indicated on the right. Signals on immunoblots were revealed by chemiluminescence.