TY  - RPRT
TI  - The progress zone -- alive or dead?
AU  - Cheryll Tickle
AU  - Lewis Wolpert
PY  - 2002
DO  - 10.1038/ncb0902-e216
UR  - https://pubmed.ncbi.nlm.nih.gov/12205485/
ID  - 12205485
ER  -