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Read articles, including Science News stories written for ages 9-14, on the SNK website.
Braun-Fahrlander, C., et al. 2002. Environmental exposure to endotoxin and its relation to asthma in school-age children. New England Journal of Medicine 347(Sept. 19):869-877. Available at http://content.nejm.org/cgi/content/full/347/12/869. Carpenter, S. 1999. Modern hygiene's dirty tricks. Science News 156(Aug. 14):108-110. Available at http://www.sciencenews.org/pages/sn_arc99/8_14_99/bob2.htm. Marra, F., et al. 2006. Does antibiotic exposure during infancy lead to development of asthma? Chest 129(March):610-618. Available at http://www.chestjournal.org/cgi/content/full/129/3/610. Seppa, N. 2000. Do more infections mean less asthma? Science News 158(Aug. 26):134. Available to subscribers at http://www.sciencenews.org/articles/20000826/fob7.asp.

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