Barbara Cunningham | Nov 25, 2001 | 9 min read
As the complete human genome sequence emerges, research shifts from questions of genomics to those of proteomics--determining the function of individual gene products and mapping global gene expression patterns. Gene expression patterns change continually during the course of tissue development and differentiation. The expression of different gene products at any given time within a particular cell defines the cell's characteristics and helps determine how it will react to external stimuli. Alte