Declercq, L., Schmidt, G., Delaère, P., & Remacle, C. (1980). Nuclear Events in B-cells of Young and Senescent Rat Islets in Organ-culture. Cell Biology International Reports, 4(9), 817-827. https://doi.org/10.1016/0309-1651(80)90180-0 (Original work published 1980)