TY  - RPRT
TI  - TGF-beta: problems and prospects.
AU  - M B Sporn
AU  - A B Roberts
PY  - 1990
DO  - 10.1091/mbc.1.12.875
UR  - https://pubmed.ncbi.nlm.nih.gov/2100192/
ID  - 2100192
ER  -