
IndraLab
Statements
reach
"HIV-luc(ACE2) and HIV(SARS-CoV S/ASLV-A env) particles were mixed, pre-incubated at 37 o C and then treated with PBS, trypsin (10 µg/ml), or cathepsin L or B (2 µg/ml) for 10 minutes at 25 o C. Proteases were inactivated by leupeptin (20 µg/ml), incubated at 37 o C for 30 minutes to allow membrane fusion and plated on HeLa/Tva cells pretreated with leupeptin (20 µg/ml)."