Abstract: | It has been tested the bacteriolytic activity and the interaction among the development of the bacteriophage T4 and Ergot alkaloids. It has been determined a bacteriolytic action on the bacterial stub "E. Coli host of bacteriophage T4. It exist an interaction also among such alkaloids and the development of the bacteriophage T4, which appears through an increase of the quantity of lysis areas, becoming evident in solid bodies containing the lysing bacterium. Further researches with other bacterial and virus stubs will be effected and mentioned afterward. |