Table II. Tissue specificity of the extracellular matrix. Color code represents the number of peptides and total peptide precursor ion abundance of each protein in the two independent samples used to define each of the lung and colon matrices. Values used to generate the table were extracted from columns F (number of peptides) and I (peptide abundance) of supplemental Table S4B (lung) and supplemental Table S4D (colon). Dash (—) indicates that the protein was not found in either sample from a given tissue. Proteins included in this table were found in two independent samples with at least two peptides in one of the two samples. Uniprot accession numbers are given in supplemental Table S4.