GNS and infection: A marked shutdown of host cell protein synthesis was observed in PUCV-infected cells from 17 hpi but, as infection progressed, several protein bands of increasing intensity were observed with relative migrations (i.e. molecular mass (Mr)) of approximately 197, 78, 68, 47, 33 and 29 kDa; these corresponded roughly to the predicted molecular weights of the PUCV L, G, GNS, N, P and M proteins.