Fig. 2: The effect of abdominal ultrasound on the MSTN/AKT/mTOR signaling pathway in hindlimb unloaded mice.

A The protein level of MSTN in gastrocnemius muscle. B The protein level of ActRIIB in gastrocnemius muscle. C The protein level of AKT in gastrocnemius muscle. D The protein level of mTOR in gastrocnemius muscle. The data were expressed as mean ± SD, *p < 0.05 and **p < 0.01.