The builder will introduce new, more convenient, healthier and prettier substances, and the young architect will become increasingly the intelligent student of novelty.

Natural processes can also introduce toxic substances into nontoxic honey produced from nontoxic nectar.

Breathing this air can introduce dangerous substances into the lungs.

The idea is to introduce substances that block myostatin.

We can now introduce certain substances into plants, merely by sprinkling the substance onto the leaves.

Qadar introduced certain substances into the blood of his experimental subjects, causing changes in muscle mass, perception thresholds, and reaction times.

Jet Injectors work by introducing substances into the body through a jet of high pressure gas as opposed to by a needle.

He then introduced additional substances (for example, blood and albumin) to the solution and observed the effects on the beating heart.

There are also other consents which are required, for example, before introducing hazardous substances.

Introducing unnatural substances such as drugs into the body to improve health has proved a poor idea.