TY  - RPRT
TI  - The stem cell challenge.
AU  - Robert Lanza
AU  - Nadia Rosenthal
PY  - 2004
DO  - 10.1038/scientificamerican0604-92
UR  - https://pubmed.ncbi.nlm.nih.gov/15195398/
ID  - 15195398
ER  -