John McKechnie

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We studied 184 Cree Indian infants in randomized, prospective fashion to assess the effect of age on lymphocyte sensitization to purified protein derivative (PPD) before and after and without bacillus Calmette-Guérin (BCG) vaccination. Lymphocyte responses to PPD, Candida, and streptokinase were measured at birth and at intervals later. The mean response of(More)
Construction is one of the most information intensive industries; typically professionals access the industry information resources on a daily basis. The major constraints to the future development of a formally encoded knowledge base are fragmented information sources and lack of comprehensive classification schemes. In agreement with earlier research and(More)
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