In fact, the whole body is made up of brain tissue.

But they are not good for use where brain tissue is concerned.

One was across the state, where actual brain tissue had been found.

"We'll know more when I get a look at the brain tissue."

As a result the drug can enter the brain tissue.

Almost without any effort on his part it came free from the surrounding brain tissue.

A small piece of brain tissue had learned a new trick.

One short use on the way here was apparently enough to cause serious damage to the brain tissues.

Our little piece of extra brain tissue has got to have taken us across a threshold.

Testing can be done only on dead animals, since the test requires brain tissue.