Fig. 1From: Gamma-glutamyltransferase activity in exosomes as a potential marker for prostate cancerGGT1 expression in exosomes isolated from PC cells by differential centrifugation. Exosomes were isolated from the culture medium of LNCaP, C4, C4–2 and C4–2B cells by differential centrifugation. Exosomes (a) and cell lysates (b) were subjected to Western blot analysis for GGT1 large and small subunits, CD9, PSMA and β-actinBack to article page