The organisms had been exposed to the test concentrations for ninety six h. Biological observations had been performed daily. Two long-time period studies with Swiss mice or NZW rabbits, the place the animals have been treated with 0. In an in vitro. In an investigation in three human volunteers using conditions just like those utilized…

The third study, carried out in , included of energetic workers. In subjects men, 13 girls with a imply age of 37 years, each laboratory and different tests, together with medical examination, were carried out; no irregular thyroid glands or adjustments in T four values were found in any of the subjects compared with normal…