UCP2 and cancer: However, the UCP2 expression in single neurons contradict our presented results and reports from other groups showing that UCP2 abundance is limited to cells, which are able to shift to glycolysis in order to ensure the rapidly increased metabolism during proliferation such as lymphocytes, cancer and embryonic stem cells [53], [67]–[69] Because neurons do not display a high proliferation rate leading to increase of aerobic glycolytic metabolism we suggest that all neurons do not express UCP2 at protein level.