Abstract
Intracellular rubella virus (RV) polypeptide synthesis during a productive infection of murine fibroblasts (L2 cells) has been investigated using immune precipitation techniques. Four structural and three additional intracellular polypeptides (p75, p60, VP44, VP41, p30, VP24, and VP19) were observed following polyacrylamide slab gel electrophoresis and autoradiography. However, when normal rat glial (RG) cells were infected only five polypeptides could be observed (p75, p60, VP44, VP41, and VP19). No infectious RV could be detected in tissue culture medium from flasks of infected RG cells. Calculations of relative concentrations of intracellular RV polypeptides precipitated from L2 and RG cells indicated that undetectable amounts of p30 and VP24, diminished amounts of p60 and VP19 and more than twice as much p75 were precipitated from infected RG cells. These data indicate that there is restricted replication of RV in normal rat glia.
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