(to cause something to happen quickly - here, the release of particular chemicals in the body)

But nicotine later came to refer specifically to the particular chemical in the plant.

It is hard to definitively link a particular chemical with a specific health effect, and exposed adults may not show any ill effects.

As with metals, attack is confined to specific polymers and particular chemicals.

According to this theory, color blindness is due to the lack of a particular chemical in the eye.

How the brain perceives a particular chemical is both a physiological and a psychological phenomenon.

Depending on the particular chemical used, use of too much plasticizer may result in a retarding effect.

Just how dangerous they are depends on the particular chemical and how much is used.

A particular chemical, a type of radiation, a-a-who knows what?

"The toxicity of any particular chemical depends on many factors, including the extent to which it enters an individual's body."