Figure 2: Signs of aging in KR/sFRP1 mice. (a, b) KR/sFRP1 mice had more grey hairs on the back than their control littermates, serving as a qualitative readout of aging. (c, d) KR/sFRP1 mouse eyes exhibited a rough surface on the anterior lens capsule. The granular deposits were more apparent in high-magnification images (e, f).