http://ali-alr.maktoobblog.com Fri, 20 Jan 2006 06:17:00 +0000 http://backend.userland.com/rss092 en Introduction< ?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /> Lead serves no useful purpose in the human body, and its presence in the body can lead to toxic effects, regardless of exposure pathway. Lead toxicity can affect every organ system. On a molecular level, proposed mechanisms for toxicity involve fundamental biochemical ... http://ali-alr.maktoobblog.com/10968/%d9%85%d8%a7%d8%b0%d8%a7-%d8%aa%d8%b9%d8%b1%d9%81-%d8%b9%d9%86-%d8%aa%d8%a3%d8%ab%d9%8a%d8%b1-%d8%a7%d9%84%d8%b1%d8%b5%d8%a7%d8%b5/