Toxicity of monazite particulates and its attenuation with a complex of bio-protectors.

Background: Workers employed on mining, processing and storage of monazite are at risk of exposure to dust with expected adverse health effects.

Objectives: To study the adverse health effects of monazite particles in experiments on rats and to test the possibility of attenuating these effects.

Methods: Outbred white rats were injected intratracheally with a suspension of ground monazite concentrate (MC) in order to investigate the cellular response of the lower airways 24 hours later and the organism's status 6 months after the injection.