Staging restriction blocks in novel <i>Fv1</i>s.

<p>MDTF cells were transduced with <i>Fv1CAR1</i> and <i>Fv1SPR1</i>, then stable Fv1-expressing cell lines selected and tested for restriction of virus replication by FACS (A, B) or by PCR to measure viral DNA synthesis or formation of circular viral DNA containing two LTRs (C, D).</p>