Fig. 3From: Evaluation of a simple method for storage of blood samples that enables isolation of circulating tumor cells 96 h after sample collectionAnalysis of gene-expression levels in CD45-negative cells isolated from blood samples taken from a patient with cancer and stored for 0–96 h. Gene expression was determined by qPCR, and threshold cycle (Ct) values for entry of reactions into the exponential-amplification phase are shownBack to article page