Effects of 9.4 GHz microwave exposure on meiosis in mice.

Exposure to 9.4 GHz pulsed microwaves at low power densities for 1 h/day during 2 weeks induces in adult male Balb/c mice disturbances in meiosis, consisting in an increase of translocations and the appearance of cells with several chromosome pair remaining univalents at MI.

[Incorporation of C-14-glycine in vitro into normal human lymphocytes and those in cases of aberration of chromosome 21].

Since Caspersson 's and Brachet 's investigations it has been very well known that the nucleolus is a cellular center of protein synthesis regulation. Later it has been shown that the nucleolus is the site of ribosome production, that means that it produces one of the basic elements of the cytoplasmatic apparatus of protein synthesis. Morphologic observations demonstrated that the nucleolus in man is formed in close connection with secondary constrictions of acrocentric chromosomes of the D and G groups.