Unge G, Carlsson S, Ljungqvist A, Tornling G, Adolfsson J
Acta Pathol Microbiol Scand A. 1979 Jan;87(1):15-7. doi: 10.1111/j.1699-0463.1979.tb00018.x.
Cellular proliferation was studied by incorporation of 3H-thymidine in the hearts of young, adult and old swimming-exercised rats. The proliferative activity was measured by scintillation counting. The swimming exercise induced a significant proliferation of capillary wall cells in the younger age groups, suggesting a neoformation of myocardial capillaries in these rats, whereas no cell proliferation was recorded in the old rats.
