Fig. 2From: The collagen enhancement by Spirulina extract in intrinsic and extrinsic skin aging in albino ratEffect of Spirulina extract on the histological appearance of the albino rat skin (HE stains 10×). GI: control young group, GII: SE only group, GIII: UVA group, GIV: UVA + SE group, GV: old untreated group and GVI-old + SE group, arrows: wrinkles, arrowheads: destructionBack to article page