Source:http://linkedlifedata.com/resource/umls/id/C0003818
MSH: A shiny gray element with atomic symbol As, atomic number 33, and atomic weight 75. It occurs throughout the universe, mostly in the form of metallic arsenides. Most forms are toxic. According to the Fourth Annual Report on Carcinogens (NTP 85-002, 1985), arsenic and certain arsenic compounds have been listed as known carcinogens. (From Merck Index, 11th ed),CSP: widely distributed element with atomic symbol As, atomic number 33, and atomic weight 75; occurs mostly in the form of metallic arsenides; most forms are toxic and carcinogenic.,NCI: A poisonous chemical used to kill weeds and pests. Also used in cancer therapy.,MEDLINEPLUS: <p>Arsenic is a natural element found in soil and minerals. Arsenic compounds are used to preserve wood, as pesticides, and in some industries. Arsenic can get into air, water, and the ground from wind-blown dust. It may also get into water from runoff. </p><p>You may be exposed to arsenic by</p><ul><li>Taking in small amounts in food, water or air </li><li> Breathing sawdus