Abstract
The infection of Bacillus subtilis Marburg strains with DNA of bacteriophage M2 was studied in comparison with the bacterial DNA transformation. The results of dose response experiment and dilution experiment suggested that the phage-DNA infection could be accomplished only by the simultaneous incorporation of at least four DNA fragments which determine the size of phage-DNA. These results were taken as evidence that there might be no intrinsic difference between the two phenomena.
