Isolation and characterization of ColE2 plasmid mutants unable to kill colicin-sensitive cells
β Scribed by Hallewell, Robert A. ;Sherratt, David J.
- Publisher
- Springer
- Year
- 1976
- Tongue
- English
- Weight
- 947 KB
- Volume
- 146
- Category
- Article
- ISSN
- 0026-8925
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π SIMILAR VOLUMES
Mutants of mouse L-cells which are temperature-sensitive for growth have been obtained by using both selective and nonselective isolation procedures on populations treated with the mutagen nitrosoguanidine. Selective isolation was carried out by utilizing a five-day treatment with 3H-TdR and ara-C a
## Abstract A stable spheroplast type Lβform could be isolated by transferring 627 single colonies and 195 agar blocks with several colonies of unstable Lβforms of __Proteus mirabilis__ D 52 on agar media without supplements of penicillin. The Lβform grows well on complex and synthetic agar media,