The inhibition of
growth of human chronic myelogenous leukaemia K562
and promyelocytic leukaemia HL-60 cells by dimethylcrocetin,
crocetin and crocin with 50% inhibition (ID50)
reached at concentrations of 0.8 and 2 mM, respectively,
(Morjani, 1990; Tarantilis, 1994).