FRANK A. SIMON, M.D.
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From the standpoint of their development the several types of hypersensitiveness may be divided into two groups. Those in the first group are characterized by the fact that, in a given animal species, all individuals that are adequately exposed to a suitable allergen become sensitized. These types of hypersensitiveness, therefore, may be reproduced at will. In this group there are (A) the hypersensitiveness of infections, such as tuberculosis, pneumococcus infections, trichophyton infection, etc. (B) The hypersensitiveness which follows the parenteral injection of foreign substances, such as foreign blood serums (anaphylactic hypersensitiveness). (C) Contact eczema of the type which can be
SIMON FA. THE PROBLEM OF THE DEVELOPMENT OF HYPERSENSITIVENESS IN MAN1. Ann Intern Med. ;12:178–188. doi: 10.7326/0003-4819-12-2-178
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Published: Ann Intern Med. 1938;12(2):178-188.
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