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Serum levels of BDNF and NT4/5 in 75 patients at the time of diagnosis of colorectal cancer. Mean BDNF levels were 8.2±1.7 ng/ml and NT4/5 levels were 15.1±6.9 ng/ml. Each data-point represents the result for one patient, horizontal lines represent the mean value and bars represent the standard deviation. BDNF, brain-derived neurotrophic factor; NT4/5, neurotrophic factor 4.
