New soluble-formazan assay for HIV-1 cytopathic effects: Application to high-flux screening of synthetic and natural products for AIDS-antiviral activity. - Weislow ,O.W,.; Kiser ,R,.; Fine ,D,.; Bader ,J,.; Shoemaker ,R.H,.; Royd ,M.R.. (J. Natl. Cancer Inst., 1989)