Selenium and the risk of cancers of the colon, pancreas and stomach
نویسندگان
چکیده
Material and methods The research material was a total of 94 samples of blood serum from people with cancer, diagnosed and confirmed in one of the organs: colon (55 cases), pancreas (30 cases) or stomach (9 cases) and 94 samples of blood serum derived from healthy individuals which paired control group. The criteria adopted for pairing included: gender, year of birth (+/3 years), history of the occurrence of cancers in the family among first degree relatives and smoking status expressed in pack-years. Selenium concentration in blood plasma was determined using graphite furnace atomic absorption spectrometry (GFAAS). The measurement accuracy was +/5% μg Se/l.
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