11.   By adding substances that promote gene expression, they turned her skin cells into tiny nerve growth factor pumps.

12.   Errors in gene expression cause some illnesses.

13.   Gene Logic Inc. and other companies offer information on what genes are turned on in different types of cells, a field known as gene expression.

14.   How the brain stores long-term memory is a mystery, but some researchers think it involves permanent changes in the gene expression of brain cells.

15.   Hughes-supported researchers can pay without blanching at the high costs of maintaining germ-free mouse colonies or buying Affymetrix chips for analyzing gene expression.

16.   Such stress lowers resistance to disease and alters gene expression.

17.   The egg cell then seems to reset the gene expression of the injected DNA.

18.   They are looking at molecular patterns of gene expression in embryos created by cloning and comparing them to the patterns in embryos created by normal fertilization.

19.   Unlike flies, mammalian cells continue to divide and renew throughout life, so inducing large changes in gene expression may be risky.

20.   In fact, said Humpherys, stem cells are unstable in gene expression even in the laboratory dish.