William Park

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1. Typical pneumococci were present dunng the winter months in the throat secretions of a large percentage of healthy individuals in city and country. 2. A higher percentage of atypical strains of pneumococci have been obtained from healthy persons than from those suffering from pneumonia. In the latter cases the atypical strains may have been overlooked,(More)
1. The horse, apparently itself unsusceptible to poliomyelitis, can be stimulated in certain cases but not all to the production of virucidal antibodies. 2. The virucidal potency of such immune serum can be raised to a point comparable to that of human convalescent serum and when concentrated and refined exhibits a four-fold increase in potency. 3. Such(More)
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