抄録
The kinetics of phage induction in artificial lysogenic strains of Shigella flexneri was investigated by means of X-ray irradiation.
The β phage induction in KA (βL) was found to be a kind of single-hit phenomenon, whose target size was estimated to be about 50mμ in diameter. The maximum induction rate was about 40 per cent.
Whereas, the target diameter responsible for colony inactivation was about 125mμ, indicating that this is different from the target responsible for phage induction.
The latent period of time and burst size of the induced KA (βL) bacteria by X-ray were about 60 minutes and about 100 independently of the X-ray doses from 5 to 90kilo roentgens.
The diameter of the sensitive area of the β phage particle (whose size in electron micrograph was about 40-50mμ in diameter) was estimated to be about 16mμ.
