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Induction of asthmatic paroxysm was successfully performed on an inpatient with asthma due to Mabushi (straw on which silk worms are raised) usiug Mabushi or its extract solution.2. Artifical induction was attempted on this patient by inhalation of various food powders, but without any success.3. The patient was positive in skin, ocular, rhinic, pharyngeal test and Prausnitz-Küstner reaction with protein fraction of Mabvshi. Further, the inductiou succeeded on this patient with this protein fraction.4. Inhalation test and analysis of the antigen by skin and other allergic reactions disclosed that the antigen was present in the protein fraction of Mabushi.5. The serum of this patient was negative in precipitation against this protein fraction.6. Desensitization with this fraction was confirmed by inhalation, and skin and other allergic reactions.
Seiji NAKAZAWA (Fri,) studied this question.