| allergy to castor bean in the sudan: measurement of serum ige and specific ige antibodies. | allergy to castor bean was diagnosed in thirty-nine dockworkers from port sudan, on the basis of rhinitis and/or asthma provoked by castor bean dust, together with a positive prick test to a high dilution of castor bean extract. these were compared to twelve non-allergic dockworkers from port sudan and forty-three other port sudan residents. the castor bean allergic group had significantly higher ige levels (mean 902 iu/ml) than the non-allergic dock workers (mean 245 iu/ml) or the port sudan re ... | 1981 | 6976240 |