KRA in 1.7-month-old SHR was slightly larger than that of the control, but it was not significant. After the age of 3 months, KRA of SHR decreased. Both DNase and RNase activities in SHR were higher than in the control. β-GPase activity was slightly higher in 1.7-month-old SHR than in the control. Cathepsin showed increased activity in 13 to 15-month-old SHR.
