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| | Viviscal Hair Loss Product Results Study Number 1 |
 | | In some animals, such as rats and mice, all hair appears to be in the same state of activity and all cyclic changes are synchronized(1), whereas in humans the cycle of each follicle occurs independently from that of the adjacent ones, thus exhibiting a mosaic pattern. |
 | | Hair growth is regulated by several factors(2-4) and the roles of innervation and vascularization have not been fully elucidated. |
 | | Vellus hairs are short, fine, soft, usually non-pigmented and unmedullated, whereas terminal hairs are large, heavily pigmented and medullated, and intermediate hairs occur on the scalp and demonstrate a morphology between those of terminal and vellus hairs, i.e. |
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