TY  - RPRT
TI  - Diphtheria toxin subunit active in vitro.
AU  - R J Collier
AU  - H A Cole
PY  - 1969
DO  - 10.1126/science.164.3884.1179
UR  - https://pubmed.ncbi.nlm.nih.gov/4305968/
ID  - 4305968
ER  -