HuPAR2eGFP PERV pol copy numbers were normalized by HuPAR1eGFP PERV pol copy numbers in each individual experiment (n = 3 with 3 replicates in each) and are expressed as percent of HuPAR1 function for PERV-A 14/220* infection (Figure 1). Here, SLC52A2 is linked to infection.