202410-cross section of low density of collagen and elastin

fibroblasts infographic dermatology background production hypodermis connective formation structure depletion synthesis stretched epidermis schematic childhood aesthetic collagen wrinkled strength flexible wrinkles abundant exposure density elastin concept protein atrophy produce muscles diagram vessels biology fibers dermis vector beauty damage tissue design repair cross layer white aging amino shape lines blood skin care acid cell fine firm body flat low age