FIELD: medicine, proteins. SUBSTANCE: method involves the treatment of preliminary prepared and milled derma by alkaline-salt substance, neutralization with acetic acid followed by freezing, lyophilic drying and grinding being without the following sterilization. The obtained collagen preparation is used in medicine and pharmacy for ointment, liniment, suppository, eye drop, tablet and other medicinal forms making. EFFECT: improved method of collagen preparing.
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