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. Author manuscript; available in PMC: 2017 Jul 12.
Published in final edited form as: IEEE Trans Ultrason Ferroelectr Freq Control. 2015 Sep;62(9):1623–1633. doi: 10.1109/TUFFC.2014.006883

Fig. 5.

Fig. 5

Apparent width of the microcellulose tube as a function of contrast agent formulation, concentration, and applied pressure. The error bars indicate one standard deviation. The brackets indicate that a significant difference is present between groups (p < 0.05).