Targeted homologous recombination at the endogenous adenine phosphoribosyltransferase locus in Chinese hamster cells.
Proc Natl Acad Sci U S A. 1989 Jun;86(12):4574-8. doi: 10.1073/pnas.86.12.4574.
Proc Natl Acad Sci U S A. 1989.
PMID: 2734308
Free PMC article.