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This may rely on either lateral inhibition of hair follicle fate in uninduced cells by nearby cells already committed to a placode fate, or a requirement for a locally restricted co-inducing signal.
The skin has two types of adult stem cells: epidermal and hair follicle. Their jobs seem well-defined: maintaining the skin, ...
Thinning hair in men is very common with aging. But there are treatments and other products that can help cover and treat hair loss.