Blood test Chemicals in order to compare the levels of chemical residues in the blood stream of chili farmers group in Chiang Rai, Amphoe mueang, Tambon khamin, and networks?
The blood test for a substance to compare the levels of chemicals in the blood stream of pepper growers in Chiang affiliated parish and parish entrenched District, Sakon Nakhon.
Venipuncture for chemicals, to compare the levels of chemicals residues in blood of the farmers who grow chili in the District, Chiang network. District turmeric and district, Sakon Nakhon province.