Limited information is available regarding distribution in animals after oral exposure to 2,4-DNP.

Although some of the testing methods have been questioned, oral exposure has been shown to cause cancer in experimental animals.

No effects on the central nervous system have been seen with inhalation and oral exposure.

Upon oral exposure, copper sulfate is only moderately toxic.

Developmental effects have also been reported in rats following oral and inhalation exposures.

Petitioners contend that children are particularly at risk for oral exposure to cadmium because they put objects in their mouths.

Chronic oral exposure of humans to cadmium may lead to kidney disease.

Systemic contact dermatitis after oral exposure to nickel: a review with a modified meta-analysis.

Effects from oral exposure to acetone in humans are limited to case reports.

A lower response via oral exposure would be consistent with a role of respiratory metabolism in pulmonary carcinogenicity.