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Khat (Catha edulis) contains cathinone, an active principal that is customarily used as a psychostimulant that wards off fatigue and to some extent used as an aphrodisiac.To investigate effects of escalating doses of cathinone on hormone expression by different anterior pituitary cell types using specific antibodies.Eleven vervet monkeys (6 males and 5 females) divided into tests (n=9) and controls...