The literature of the years 1930 and 1931 is largely an elaboration of work initiated in previous years.
ETIOLOGY AND PATHOGENESIS
Heredity.—Bray1 reported an extensive study of the heredity factor in allergy. Studies in heredity have been reported in earlier reviews in this journal. However, on account of their practical importance, Bray's conclusions may be reviewed briefly. In accordance with the results of other observers, especially Cooke and Vander Veer, he found that allergy is transmitted according to mendelian laws. He stated, however, that this is only one of three types of transmission. He discussed, in addition, what he termed a placental or serum sensitization in which mendelian heredity apparently plays no part. He believed that in this type of transmission the infant is sensitized in utero, either through the effect of certain substances eaten by the mother (a view previously held by Ratner) or by the actual
DUKE WW. ADVANCES IN THE FIELD OF ALLERGY AS RELATED TO OTOLARYNGOLOGY DURING THE YEARS 1930 AND 1931. Arch Otolaryngol. 1931;14(5):623–640. doi:10.1001/archotol.1931.03580020693014
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