TY  - RPRT
TI  - A method for securing thymineless mutants from strains of E. coli.
AU  - T OKADA
AU  - K YANAGISAWA
AU  - F J RYAN
PY  - 1961
DO  - 10.1007/bf00890061
UR  - https://pubmed.ncbi.nlm.nih.gov/14481497/
ID  - 14481497
ER  -