TY  - RPRT
TI  - Retinoic acid, a developmental signalling molecule.
AU  - D Summerbell
AU  - M Maden
PY  - 1990
DO  - 10.1016/0166-2236(90)90006-v
UR  - https://pubmed.ncbi.nlm.nih.gov/1692171/
ID  - 1692171
ER  -