TY  - RPRT
TI  - How the immune system develops.
AU  - I L Weissman
AU  - M D Cooper
PY  - 1993
DO  - 10.1038/scientificamerican0993-64
UR  - https://pubmed.ncbi.nlm.nih.gov/8211092/
ID  - 8211092
ER  -