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A: PERV RNA detection of supernate. 1:supernate of d 1, 2: supernate of d 3; 3:no RT PCR of d 3; 4:second PCR of d 3; 6: second PCR of d 5; 7: RT-PCR of d 7; 8: RT-PCR of d 9; 9: no RT PCR of d 9; B: PERV permeation of bioreactor. 1: intraluminal supernate of d 3 (no RT PCR), 2: extraluminal supernate of d 3 (no RT PCR), 3: intraluminal supernate of d 3 (RT-PCR); 4: extraluminal supernate of d 3 (RT-PCR).
