We have determined the cytostatic activity in vitro against HEp-2 cells of methanol extracts from V. cruciatum Sieber (Viscaceae) parasitic on C. monogyna Jacq. (Rosaceae), C. monogyna parasitized and C. monogyna. non-parasitized. The methanol extracts assayed exhibited a moderate degree of growth inhibition compared with the values obtained with the 6-mercaptopurine (solution used as a positive control). Hyperoside from C. monogyna showed only a low degree of growth inhibition. However, β-amyrin acetate, from V. cruciatum, exhibited a high degree of growth inhibition compared with the values obtained with the solution used as a positive control.
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Gómez et al. (1997) studied this question.
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