I, II and III show expression of ErbB3, NRG1 and Krox20 stained and analysed by immunofluorescence at 1, 4 and 7 d respectively. Co‐culture, ultrasound exposure or co‐culture with ultrasound exposure increased proteins expression of ErbB3, NRG1 and Krox20 compared to control at ll different time points, and the combination of co‐culture with ultrasound exposure for SCs displayed the most remarkable effect