Fig. 1.

Analysis and classification of the identified proteins in AF-MSCs and HPL cells. (a) Venn diagrams showing the high percentage of overlapping proteins among the secretome of the two groups (AF-MSCs vs HPL). The information shown in the Venn diagram has been derived after the frequency threshold application (only peptides identified in 3/4 samples in at least one group were considered for further analysis) in the total number of identifications obtained in the two groups of samples. (b) Classification of the identified proteins. The high percentage (61%) of secreted proteins (classically and non-classically secreted) obtained in both groups, indicates the efficiency of the utilized protocol for the enrichment of secreted proteins.