TY  - RPRT
TI  - Thymic stromal cells and positive selection.
AU  - A P Chidgey
AU  - R L Boyd
DO  - 10.1111/j.1600-0463.2001.apm090701.x
UR  - https://pubmed.ncbi.nlm.nih.gov/11552945/
ID  - 11552945
ER  -