tissue specimens of different sites and serum samples were collected during the operation : cancer tissues , normal breast , normal gastric , colon or rectal wall , lymph nodes and subcutaneous fatty tissues , etc. , and concentrations of tegafur ( ft ) , 5-fluorouracil ( 5-fu ) and uracil were studied using hclp or gc-mf methods .
C0016778
tegafur
C0016360
5-fu