Elderly skin 'raises cancer risk' 老年人患皮肤癌几率增大
Older people are more at risk of skin cancer and infection because their skin is unable to mobilise the immune system to defend itself, UK research suggests.
英国一项调查显示，年老的人患皮肤癌和传染病的几率更高，因为他们的皮肤不能有效地调动免疫系统以自卫。