The first describes the creation of mice with a crucial portion of the human gene for Huntington's disease.

To prove the point, he makes a fervent speech declaring his passion for various heterosexual acts and for crucial portions of the female anatomy.

They were slices of her mind, the crucial portions; subconscious inhibitions and emotional reticence rooted out, discarded.

Then he opened the journal to de Castries's curse, marveling again that it had so long eluded him, and reread the crucial portion:

The lawyer was specifying the most crucial portion of last night's episodes.

But a crucial portion of the private land, a ranch owned by the family of Interior Secretary Bruce Babbitt, has been taken off the market.

This made the crucial latter portion of the tower's response audible only with difficulty by the KLM crew.

"Then it isn't possible for someone, using a a nuclear intensifier, to seriously cripple some crucial portion of Earth's energy supply."

Scientists believe there is no danger that the volunteers will develop AIDS from the experiments because they are not being injected with crucial portions of the virus.

And time trials will be a crucial portion of the Tour de France.