[The reverse effect of sexualsteroids on the serum-lysozyme (author's transl)]

75 women received different preparates of contraceptives (Non-Ovlon, Ovosiston, Gravistat, Deposistion--VEB Jenapharm Jena, GDR) for two years. In the last month of the application of the sexual steroids and one month later the lysozyme titer in the sera was tested to determine a reverse or stop-effect. An elevation of the muramidase could be shown in all cases. This findings are interpreted in relation to a non manifest influence of sexualsteroids on the lysozyme.