The in-vitro anti-amoebic effects of (+/-)-, (+)-, (-)-gossypol and emetine were tested against axenic trophozoites from five Entamoeba histolytica strains. The (-)-isomer was more active than the racemate and the (+)-isomer. These results indicate that the gossypol anti-amoebic activity is mainly due to its content of (-)-gossypol in all strains tested.
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González‐Garza et al. (1993) studied this question.
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