- Restoration of immune response by a cationic amphiphilic drug (AY 9944) in vitro: a new approach To chemotherapy against human immunodeficiency virus type 1. Achour, A., Landureau, J.C., Salerno-Concalves, R., Mazière, J.C., Zagury, D. Antimicrob. Agents Chemother. (1998)