Holländer GA, Wang B, Nichogiannopoulou A, Platenburg PP, van Ewijk W, Burakoff SJ, Gutierrez-Ramos JC, Terhorst C. Developmental control point in induction of thymic cortex regulated by a subpopulation of prothymocytes. Nature. 1995 Jan 26;373(6512):350–3. doi: 10.1038/373350a0. PMID: 7830770.