Skip to main content
. 1999 Jun 8;96(12):6591–6596. doi: 10.1073/pnas.96.12.6591

Figure 1.

Figure 1

Method for quantitating differential protein expression. For illustration, proteins that remain unchanged in the two cell pools are assumed to be present in equal abundance. (In practice, proteins that remain unchanged in the two cell pools may not be present in equal abundance, and the ratios of the peptide peaks will be a constant value that is not equal to one.)