4Chausovsky G, Luchansky M,Figer A, et al. Expression of cytokeratin 20 in the blood of patients with disseminated carcinoma of the pancreas,colon, stomach, and lung. Cancer, 1999,86 ( 11 ) :2398-2405.
5Funaki NO, Tanaka J, Itami A, et al, Detection of colorectal carcinoma cells in circulating peripheral blood by reverse transcription-polymerase chain reaction targeting cytokeratin-20mRNA. Life Sci,1997,60(9) :643-652.
6Gala JL, Loric S. Sensitivity of specificity of reverse transcrip-tasepolymerase chain reaction assays:the real challenge of molecular staging of prostatic carcinomas. Int J Cancer, 1998,77(1) : 161
7Chambers AF, MacDonald IC, Schmldt EE, et al. Clinical targets for anti-metastasis therapy. Adv Cancer Res, 2000,79 : 91-121.
8Ikeguchi M, Ohro S, Maeda Y, et al. Detection of cancer cells in the peripheral blood of gastric cancer patients. Int J Mol Med, 2003,11(2) :217-221.
9Mori M, Mimori K, Ueo H, et al. Molecular detection of circulating solid carcinoma cells in the peripheral blood:the concept of early systemic disease, Int J Cancer 1996,68(6) :739-743.