21.   The storms themselves were relatively small vortexes of wind and precipitation circling counterclockwise around a central core.

22.   They are composed of drupelets with a central core.

23.   This match enabled Cech to fish out from human cells the gene that makes the central core of the telomerase enzyme.

24.   Will we be willing to invest in more mass transit so we can be a well-planned city around a central core?

25.   Yuca takes a bit of precooking preparation because its underskin and central core both have to be removed.

26.   A central core of improved curricula must be the common ground for all teaching institutions in the country.

27.   These clusters contain many spiral galaxies in which stars are orbiting a central core in an orderly pinwheel formation.

28.   Europe, trade, human rights and arms control will form the central core of his vision for the future.