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A US research team examined the possibility that normal human oral keratinocytes might be directly infected by HIV or might convey infectious HIV virions to adjacent leucocytes.
It is probable that movement of poliovirions occurs through the interaction of the virions with the host cell actin similar to the mechanisms seen in some bacterial infections 10-12.
However, the tubes may contain multiple virions , or capsids, like peas in a pod, or the linear arrangement of spores in neurospora filaments.
The humoral arm produces virus-neutralizing antibodies that, when fully effective, completely prevent virions from infecting new host cells.
At the center of the virion is a protein capsid containing two identical, single strands of genomic RNA, plus essential reverse transcriptase enzymes, as well as some accessory molecules.
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