11.   Next they added it to human cell cultures in a laboratory dish and exposed the cells to HIV.

12.   Richard Lenski, a biologist at Michigan State University, used to study evolution by allowing bacteria to reproduce, generation after generation, in a laboratory dish.

13.   Scientists were already making cultures of the microbes in laboratory dishes.

14.   Taking the fungus, then in its rare sexual state, she grew it in a laboratory dish to get it to propagate in its asexual form.

15.   The bacterium long has frustrated researchers trying to understand how it works because it cannot be grown in laboratory dishes for easy study.

16.   The cells are self-replenishing, multiplying naturally in laboratory dishes.

17.   The cells multiply tirelessly in laboratory dishes, offering a self-replenishing supply.

18.   The other is to convert her treatment to in vitro fertilization, a procedure in which the ripened eggs are removed and fertilized in a laboratory dish.

19.   The things multiply like bacteria in a laboratory dish.

20.   Their experiments involved introducing copies of DNA from both viruses into human immune-system cells grown in a laboratory dish.