Evaluation of the in vitro Cytotoxicity of some Sesquiterpene Lactones on a Human Lung Carcinoma Cell Line Using the Fast Green Dye Exclusion Assay - Woerdenbag, H J; Meijer, C; Mulder, N H; de Vries, E G E; Hendriks, H; Malingré, Th M (Planta Medica, 1986)