AUTHOR=Montero-Herradón Sara , García-Ceca Javier , Zapata Agustín G. TITLE=How Many Thymic Epithelial Cells Are Necessary for a Proper Maturation of Thymocytes? JOURNAL=Frontiers in Immunology VOLUME=12 YEAR=2021 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2021.618216 DOI=10.3389/fimmu.2021.618216 ISSN=1664-3224