@misc{indiciae6a82a6eddfd9, title = {Phenotypic expression in E. coli of a DNA sequence coding for mouse dihydrofolate reductase.}, author = {A C Chang and J H Nunberg and R J Kaufman and H A Erlich and R T Schimke and S N Cohen}, year = {1978}, doi = {10.1038/275617a0}, url = {https://pubmed.ncbi.nlm.nih.gov/360074/}, note = {Source identifier: 360074} }