Fig. 2

Distribution of Haliotis laevigata shell protein between different fractions. Venn diagrams showing the distribution of accepted identifications between the different fractions obtained by extraction of different shell layers with different shell washing protocols. I, acetic acid-insoluble fraction; S, acetic acid-soluble fraction. a, b and c, shell washing protocols applied before matrix extraction as described in the Material and Methods section. Correctly proportioned two and three circle Venn diagrams were drawn using Venn Diagram Plotter (https://omics.pnl.gov/software/venn-diagram-plotter)