Figure 2: Number of identified proteins depending on the tolerance of PMF search. Mascot searches were performed against SwissProt and IPI databases. Filled circles and squares indicate, respectively, the number of human liver microsomal proteins identified against IPI in 40 and 20 SDS-PAGE gel slices. Open circles and squares denote the number of human liver microsomal proteins identified against SwissProt in 40 and 20 SDS-PAGE gel slices.