Johnell, Olof, and Nders Hulth. “The Mitotic Activity of Bone Marrow and Thymus After Combined Antigenic Challenge and Trauma”. Acta Orthopaedica 50, no. 6 (January 1, 1979): 713–715. Accessed May 9, 2026. https://actaorthop.org/actao/article/view/29042.