Research Article

Noninvasive Evaluation of Injectable Chitosan/Nano-Hydroxyapatite/Collagen Scaffold via Ultrasound

Figure 3

The grey-scale value of ultrasound image on experimental group and control group after 0, 14, and 28 days of incubation. The values are shown as mean ± standard deviation ( 𝑛 = 5 , * 𝑃 < 0 . 0 5 ).
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