Studies in Hypersensitiveness

[摘要] 1. 1. Thirty-one late hay fever subjects were tested with extracts of high and low ragweed pollens, and each one was found to be equally sensitive to the two extracts.2. 2. One group of these individuals were given the usual series of prophylactic injections of one of the extracts, and the remainder were similarly treated with the other extract.3. 3. After a maximal tolerance had been established to the one extract, an equivalent or larger quantity of the other extract was injected. This change from one extract to the other was not followed in any case by a constitutional reaction, which must have been expected if the atopen of the two pollens were not identical.

[学科分类] 生物科学（综合）