Venn diagrams and tables showing the average number of proteins (in total and in percentage of the total) identified across three TRs and three BRs out of the total proteins detected in the three cell lines H1993 (886), A549 (976) and H1975 (879), respectively for (A) TRs (B) BRs. The proteins unique to the three replicates is shown in pink, the proteins shared by 2 replicates is shown in yellow, and the proteins common to three replicates is shown in blue.</p