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. Author manuscript; available in PMC: 2017 Nov 29.
Published in final edited form as: Ultrasound Med Biol. 2015 Feb 2;41(5):1422–1431. doi: 10.1016/j.ultrasmedbio.2014.12.021

Fig. 4.

Fig. 4

Microscopic images (a–f) and corresponding interrogation echo signals (g–l) acquired before and after the “activation pulse” in droplets and controls. Bar = 20 μm.