From the strength-giving locks of the biblical Samson to the elaborate updo of a
A hairless mouse given a placebo cream each day for a week (left) remains bald, while a compatriot (right) that researchers rubbed with a cream containing a PTHrP blocker grows a fuzz of new hair. HolickIn cross-sections of mouse skin, hair follicles show up more clearly during the hair-growth stage (top) than the resting stage (bottom).
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