INK??20, a synthetic phosphocholine lipid??AZT conjugate, was evaluated for antiviral activity against wild??type HIV??1, a matched pair of pre??AZT and post??AZT and multi??drug resistant clinical isolates. In addition, it was tested for activity against viruses resistant to nucleoside (AZT, 3TC) and nonnucleoside (nevirapine) reverse transcriptase and protease (saquinavir) inhibitors using the syncytial plaque reduction assay for infectious virus multiplication. The ...