Mice of both sexes were maintained and exposed separately to the magnetic field for 14 weeks. Then they were allowed to mate and gestation, birth, lactation, weaning and the development of the filial generation of mice to adulthood all took place under magnetic fieldexposure. The filial generation of mice was divided into four groups: 1) exposed females (n = 53), 2) exposed males (n = 53), 3) control group for females (n = 37) and 4) control group for males (n = 38). At the age of 31-35 weeks of age, the filial generation was examined.
two circular coils of 0.375 m radius arranged in parallel planes separated by a distance equal to their radius; each coil had 220 turns of 1.2 mm-diameter copper wire; the common axis of the coil system was oriented east-west