This study demonstrates that new neurons are generated in the adult human hippocampus, specifically in the dentate gyrus. Using postmortem brain tissue from patients who had received bromodeoxyuridine (BrdU), the researchers found BrdU-labeled cells in the dentate gyrus, indicating that new neurons are produced. These neurons were identified using markers such as NeuN, calbindin, and neuron-specific enolase (NSE). The results suggest that the human hippocampus retains its ability to generate neurons throughout life. Previously, it was believed that neurons in the adult human brain could not be replaced, which was thought to contribute to neurological diseases. However, this study shows that neurogenesis occurs in the adult human brain, similar to what is observed in rodents and monkeys. The study also found that BrdU-labeled cells in the subventricular zone of the caudate nucleus were present, indicating that progenitor cells exist in this region. The study used immunohistochemical and immunofluorescent techniques to detect BrdU-labeled cells and their expression of neuronal markers. The results showed that BrdU-labeled cells in the human dentate gyrus expressed neuronal markers, indicating that they had differentiated into neurons. The study also found that these neurons had a morphology similar to those in rodents, supporting the conclusion that neurogenesis occurs in the adult human brain. The study highlights the potential for neurogenesis in the adult human brain and its implications for understanding neurological diseases and the possibility of neuroplasticity. The findings suggest that the adult human brain has the capacity for self-renewal and that environmental factors may influence the rate of neurogenesis. The study also provides a basis for further research into the mechanisms of neurogenesis and its potential applications in medicine.This study demonstrates that new neurons are generated in the adult human hippocampus, specifically in the dentate gyrus. Using postmortem brain tissue from patients who had received bromodeoxyuridine (BrdU), the researchers found BrdU-labeled cells in the dentate gyrus, indicating that new neurons are produced. These neurons were identified using markers such as NeuN, calbindin, and neuron-specific enolase (NSE). The results suggest that the human hippocampus retains its ability to generate neurons throughout life. Previously, it was believed that neurons in the adult human brain could not be replaced, which was thought to contribute to neurological diseases. However, this study shows that neurogenesis occurs in the adult human brain, similar to what is observed in rodents and monkeys. The study also found that BrdU-labeled cells in the subventricular zone of the caudate nucleus were present, indicating that progenitor cells exist in this region. The study used immunohistochemical and immunofluorescent techniques to detect BrdU-labeled cells and their expression of neuronal markers. The results showed that BrdU-labeled cells in the human dentate gyrus expressed neuronal markers, indicating that they had differentiated into neurons. The study also found that these neurons had a morphology similar to those in rodents, supporting the conclusion that neurogenesis occurs in the adult human brain. The study highlights the potential for neurogenesis in the adult human brain and its implications for understanding neurological diseases and the possibility of neuroplasticity. The findings suggest that the adult human brain has the capacity for self-renewal and that environmental factors may influence the rate of neurogenesis. The study also provides a basis for further research into the mechanisms of neurogenesis and its potential applications in medicine.