| 摘要 |
An immune suppressive product prepared by injecting an allergen or a mixture of allergens into the body of milk-producing species. Said product being the milk or a polypeptide subfraction of milk obtained from the allergen treated host. The immune suppressive product(s) is milk and or the polypeptide fractions contained therein, which is ostensively free of the intact allergen or allergens used for the treatment of the host. The immune suppressive factor(s) being a subfraction of the allergen used for the treatment. A method of preparing immune suppressive polypeptides from intact allergens, which involves injection of the specific intact allergens into a milk-producing species, collecting the immune suppressive polypeptide fractions of the intact allergens from the milk of the treated host. The immune suppressive milk containing said polypeptide fractions, and/or the polypeptide fractions obtained from said milk, are nonreactive in animals and humans as allergens. Said factor(s), however, are highly effective in preventing or alleviating allergic reactions.
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