Superfund Research Program
April 2022 Long-term exposure to polychlorinated biphenyl (PCB) mixtures in school air may affect the nervous and immune systems, according to an NIEHS-funded study in rats. According to the authors, results indicate that this exposure level, 45.5 micrograms per cubic meter, may be close to the lowest dose in which airborne PCB exposure induces adverse health effects. [Full Text]