at a maximal moi ( multiplicity of infection ) of 1.6 vaiu ( viral antigen-inducing units ) per cell , the conventionally available value , plateau level potencies of the viral antigen and virus infectivity were attained at eight and ten days postinfection , respectively , and most of the infective virus produced accumulated in the culture fluids of infected cells .
C0009450
infection
C0042769
virus infectivity