electron microscopic examination revealed that ( i ) the alpha band contained enveloped nucleocapsids , whereas the beta band contained naked nucleocapsids and particles tentatively identified as internal components of the nucleocapsids , and that ( ii ) the enveloped virions and reduplication of cellular membranes observed in thin sections of productively infected cells were absent from abortively infected cells .
C0007603
cellular membranes
C0007634
cells