Antiviral properties of two trimeric recombinant gp41 proteins. Rgp41A and Rgp41B were patented by Mymetics Corporation (ref PCT/IB2004/002433). Production of HIV-1 pseudotyped and laboratory-adapted strains Stocks of pseudotyped viruses were generated by co-transfecting HEK293 cells with the proviral plasmid pNL4.3-?env-Luc and one of the env encoding plasmids. http://europepmc.org/article/PMC/1435769#figures-and-tables