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Fraternale A, Brundu S, Magnani M
[ Google scholar ] Badenhorst T, Svirskis D, Merrilees M, Bolke L, Wu, Z
Glutathione injections offer superior bioavailability compared to pills and topical treatments
Forms of the vitamin, known as retinoids, are involved in the regulation of gene expression, cellular proliferation and differentiation, growth and development, vision, and immunity (see the article on Vitamin A)