Less is known about the effects of lower, long-term exposure.

Long-term exposure to the gas is believed to cause cancer.

All the effects of pollutants need to be considered for both short- and long-term exposure.

The risks of long-term exposure to these elements are clear.

But lead can and does affect adults, especially after long-term exposure.

Long-term exposure to the chemical has been linked to a higher risk of cancer.

It has been shown to cause lung cancer with long-term exposure.

The chemical, with long-term exposure, has been linked to a higher risk of cancer.

Long-term exposure to stress may lead to permanent changes in the brain, some experts think.

His form has been altered, however, for long-term exposure to your dimension.