大腸菌ファージの実験的研究 第一編 大腸菌ファージのクロマトグラフ

Since 1940 the study of phage opened not only the beginning of co-operate study for physicists and chemists, but also the phage came to be clearified its character as the Bacterio Virus gradually. Then the study of phage made not a few contributions to the development of the study of Virus as model material of its kind. Now, these results are due to the endeavors of such scholars as Delbrück, Anderson, Cohen, Putznam, Doermann, Wyckoff and their co-operators mainly. Then, Charles. C. Shepard found out the characteristics of a distinctive nature in paperstrips in the course of investigations for the adsorptive behavior of Viruses. I tried some experiments in the paperchromatograph and capillarglass-chromatograph about the conditions that the phagef of coli-strains being adsorbed and recovered by paper and capillarglass. 1. The solvent employed here was 0.1% bovine serum albumin in 0.1 M sodium chloride. 2. The solution employed was colibacteriophage diluted appropriately in the same solvent. 3. The adsorbent employed was Toyo-filterpaper and capillarglass which were treated previously by 0.01 M hydrochloric acid and then washed by glasswather. 4. The experiments were carried out in an ice-box. At the beginning of an experiment a paperstrip was placed in the test tube so that it might not touch the sides, but touch the 20 ml. of solvent placed beforehand in the bottom of the tube. When the water front passed the second 1.25 cm section, 0.002 ml. of phage diluted in the same solvent appropriately as was placed in the bottom of the tube was quickly placed in the center of the second section and. the paper returned to the position in the tube. When the water front passed the last marked section, the paper was removed from the tube and ten marked sections were quickly cut off into their respective ten test tubes each containing of a culture of E. coli-strains. For a period of not more than 10 minutes, the ten sections of paper were stirred occasionally and pressed against the sides of the tubes. At the end of it, 0.5 ml. were taken out and added it to 3.0 ml. of 0.7% agar; the resultant 3.5 ml. were mixed up and poured on a 1%, agarplate. There was recovered viable phage in a considerable degree. 5. It seems to me that this recoveries of phage has been carried out due to the presence of bovine serum albumin. The chromatograph conducted here would seem to involbe the mixture of elution and displacement in the Terminology of Tiselius.