TY  - RPRT
TI  - p lambda Zd39: a new type of cDNA expression vector for low background, high efficiency directional cloning.
AU  - A J Murphy
AU  - R T Schimke
PY  - 1991
DO  - 10.1093/nar/19.12.3403
UR  - https://pubmed.ncbi.nlm.nih.gov/1829518/
ID  - 1829518
ER  -