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Chloroform extracts of the bark of Quassia amara in different dilutions was used to assess its impact on the male reproductive system of albino rats. Single daily intramuscular injections of the extract for 15 days resulted in a significant reduction in the weight of testis and epididymis but not that of the seminal vesicles and prostate (all lobes). A marked decrease in the sperm count, motility,...