comparison of high and low density of collagen, elastin, fibroblasts on white background.

skin collagen elastin fiber fibroblasts young aging wrinkle high low density atrophy depletion hyaluronic protein amino acid structure comparison diabetic dermis cross broken intact cell layer process age connective tissue firmness strength elasticity flexibility muscle older epidermis hypodermis skincare beauty lose vector concept diagram flat design infographic dermatology biology aesthetic surface treatment white background fibers care line presentation organ isolated background