Eventually, he had come to understand that her long talks rarely contained much substance.

They did not seem to him to contain enough substance to warrant publication.

It also contains substances which may help cells grow and function.

However, this list contains substances which may have synthetic origins.

Some of the balloons also contained other substances such as flour.

The plant contains several substances which can be used medicinally.

Using skin and hair care products that contain irritating substances.

Many goods are not dangerous themselves, but contain substances which could present a hazard to people, the environment or both.

"products often contain harmful substances that are damaging to human health and the environment."

The names are often different despite the fact that the medicines contain identical substances.