1.   Each time the cells divide, the number of cells doubles.

2.   Analysts say that number could double by the turn of the century.

3.   As the generals grudgingly gave way, the number of papers doubled in the last decade.

4.   Bernabucci said that number could double this year, and a marketing campaign ramps up this winter.

5.   A company spokesman said the number had doubled in the last year alone.

6.   But according to one general manager, that number may have doubled Wednesday.

7.   But it is not unusual for desirable numbers to double, triple or quadruple the price.

8.   By now that number may have doubled, Cashman said.

9.   By the end of the day, that number had nearly doubled but the canvassing board continued its effort to bring in even more workers.

10.   Catroppa expects that number to double within a couple of years.