TY  - RPRT
TI  - Gene targeting in embryonic stem cells.
AU  - R Ramírez-Solis
AU  - A C Davis
AU  - A Bradley
PY  - 1993
DO  - 10.1016/0076-6879(93)25054-6
UR  - https://pubmed.ncbi.nlm.nih.gov/8231891/
ID  - 8231891
ER  -