Fig. 4From: A useful procedure for detection of polyamines in biological samples as a potential diagnostic tool in cancer diagnosisSingle hollow fiber supported liquid membrane extracts of polyamines from unspiked normal (black chromatogram) and tumor transformed thyroid tissue of the same patient (blue chromatogram indicated by arrow) coming from the representative patient with thyroid cancer (carcinoma papillare): (a) chromatogram and (b) its magnificationBack to article page