Doctors at a university are testing the prescriptions given by Yoruba healers. A doctor picks a roundworm up out of a jar. The roundworm’s movements are recorded with a seismograph. The Yoruba healer medicine is added by a doctor with a needle and the effects on the roundworm is recorded. Different medical jars are shown in CU. CU on mice playing in a cage. Shot of a Nigerian child in bed with swollen busted lips. A doctor sits next to child in bed.