RBFOX3 and cancer: A unique study of postmortem brains from adult cancer patients (average age: 64.4 ± 2.9 years) injected with BrdU for estimating the proliferation of tumor cells identified newly generated neurons in the adult human hippocampus, which had BrdU-labeled nuclei with NeuN+, calbindin+, and neuron specific enolase+ cell bodies (Eriksson et al., 1998).