Fig. 2

Transduction efficiency of Tat-HSP22 protein into HT-22 cells. a Tat-HSP22 and control HSP22 proteins (0.5–5 μM) were added to the culture media for 2 h, b Tat-HSP22 and control HSP22 proteins (5 μM) were added to the culture media for 10–120 min and analyzed by Western blot and the band intensities were measured by densitometer. c Intracellular stability of Tat-HSP22 protein. The cells pretreated with 5 μM Tat-HSP22 protein were incubated for 1–48 h and analyzed by Western blot and the band intensities were measured by densitometer