[Study of the initial parasitic relationship between a virus of the Gourlay group L 1 and the cellular population of Acholeplasma laidlawii].

The study of the relationship between MVL 51 virus, of the Gourlay group L 1, and the Mycoplasma cells of A. laidlawii during the first 35 min of infection leads to the conclusion that a "carrier state" has been established, free virus as well as infected and noninfected cells being present at the same time in the cultures. The evidence of a virus growth after 20 min of infection and the high level of remaining viable cells (1.15 x 10(8) CFU) at the end of the experiment also indicate that the carrier state should persist, at least for some time, being probably an important factor of the virus-cell relationship in the viral group L 1.