1.   Centrophenoxine had the strongest biological activity, producing a mild stimulation of the central nervous system.

2.   For each total synthesis a brief introduction is given, outlining the biological activity and other syntheses of the target compound.

3.   Such structural analysis provides clues about the sites on the molecule responsible for its biological activity in the body.

4.   Biological activity of platelet activating factor was measured by platelet aggregation using a Chrono-log Corporation aggregometer.

5.   Therefore, the biological activity of HPV DNA in cells has been studied to investigate this issue.

6.   Both peptides have essentially identical biological activities.

7.   And lately, colder temperatures have slowed biological activity.

8.   A system for verifying the treaty, requiring countries to declare biological activities and submit to inspections of labs, is due to be agreed this year.

9.   He said the Mueller-Eberhard work provided a model for complex molecular systems in general, and showed how protein interactions generate biological activity.