1.   And the arena of investigation ranges from high-tech brain imaging centers to breakfast brainstorms, from monkey experiments to thought experiments.

2.   It was a monkey experiment, with only a handful of laboratory animals involved.

3.   MedImmune has submitted the results of its monkey experiments for publication, and plans to begin clinical trials in women by the end of this year.

4.   Others were not so sure that the monkey experiment foretold human genetic engineering.

5.   The monkey experiments were carried out under controlled laboratory conditions that did not replicate the dynamics of sexual activity.

6.   But over the past year, thanks to this impressive series of monkey experiments, many researchers have grown upbeat.

7.   In monkey experiments, this strategy fails to ward off infection but does keep the animals from dying from AIDS when they are exposed to the virus.