Fig. 1From: Construction of ultrasonic nanobubbles carrying CAIX polypeptides to target carcinoma cells derived from various organsBasic characteristics of targeted nanobubbles. a1 The particle size of targeted nanobubbles. a2 The particle size of blank nanobubbles. b The distribution of targeted nanobubbles under an optical microscope. c The morphology of targeted nanobubbles under a transmission electron microscope. d MTT assay of targeted and blank nanobubbles. *P < 0.05Back to article page