Figure 2.
Progressive limb-clasping symptoms in PSD-95 deficient mice. (a) Examples of hind-limb, all-limb and full body clasping in PSD-95-/- mice compared to a WT control. (b) Clasping duration in a 15-s interval. **, p < 0.01; ***, p≪0.001, Student's t-tests. A clasping event is defined by the retraction of limbs into the body and toward the midline. (c) Developmental progression of clasping phenotype. **, p < 0.01; ***, p≪0.001, one-way ANOVA followed by post hoc Newman–Keuls tests. Mice were observed during a 15 s tail suspension test to monitor the progression of the clasping phenotype between 4 and 20 weeks of age. Numbers in parentheses designate numbers of mice used.