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(A) Average fluorescence intensity and (B) average area of fluorescence for the 3, 70, 500, and 2,000 kDa dextrans sonicated at 0.31, 0.51, and 0.84 MPa. The pressure threshold for significant increases in both fluorescence and area of fluorescence was 0.51 MPa for 3 and 70 kDa dextrans. But it increased to 0.84 MPa for the 500 and 2,000 kDa dextrans. Stars indicate groups with fluorescence intensity or area of fluorescence statistically significant higher than zero (P<0.05).
