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871.
A man with no previous medical problems had two documented exposures to an insecticide containing the organophosphorous compounds chlordane and heptachlor. Six months to one year later, he began to experience neurological symptoms which progressed until his death. At autopsy, his brain showed classic findings of multiple sclerosis, and he had a severe peripheral neuropathy. Review of the literature indicates that the findings are not compatible with chlordane toxicity. Some of the factors to be used in determining the casual relationship between toxic exposure and disease processes are discussed. 相似文献
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Determination of ABO-blood group on human hair segments of 79 individuals was performed by means of modified Yada absorption-elutions technique. The studies were carried out with 4 micron thin cross sections of hair. In 79% of the cases it was possible to establish the correct blood group. Individual hair segments of 0.5 cm length yielded reliable results. Antigen identification was best with blood group B and most difficult of the AB type. 相似文献
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Political parties are in a transitional phase. A declining, socially restricted membership, decreasing levels of activism and a shift towards more individualistic modes of political engagement threaten the linkage role that parties have played in modern democracy. The development of the Internet in a period of change has meant that it quickly became intertwined with debates about reviving representative political organisations. Using data from a survey of party activists in the UK (N = 4,770), this article answers questions about the perception and use of new media by party activists, the Internet's potential for members' participation and engagement and the penetration of the Internet in pre-existing political careers. In general, the article asks which role new media are playing in the transition of political parties. 相似文献
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