P3R1O1V4I1R1U1S1E1S1
15 points
PROVIRUSES is validvalid
PROVIRUS, a form of virus [n]
PROVIRUS, the form of a virus when it is integrated into the DNA of the host cell [n]
PROVIRUS, a form of virus [n]
PROVIRUS, the form of a virus when it is integrated into the DNA of the host cell [n]