Abstract: A multi-layer collagen article useful for wound healing includes at least two layers; wherein at least one layer, facing the wound side, has an effective amount of non or partially cross-linked collagen; and at least one layer having an effective amount of highly cross-linked collagen matrices. A method for the production of the collagen article and a method of enhancing wound healing by means of administering the multi-layer collagen are provided.

Abstract: The invention relates to a multi-layer collagen article useful for wound healing, comprising at least two layers; wherein at least one layer, facing the wound side, is comprising an effective amount of non or partially cross-linked collagen; and at least one layer comprising an effective amount of highly cross-linked collagen matrices. The invention also relates to a method for the production of collagen article.

Abstract: A topical antibacterial preparation for treating infected wounds and for advancing their healing comprises silver sulfadiazine (SSD) and collagen, in which the w/w ratio of collagen to SSD ranges from 4/1 to 200/1. The concentration of the SSD is preferably from 0.5% to 2.5%, advantageously 1%. The collagen is advantageously native collagen, which may be acid soluble or insoluble, or mixtures thereof. The preparation may comprise an inert excipient, e.g. SiO.sub.2, or blood plasma components, peptides, carbohydrates.

Abstract: The invention provides a storage stable lyophilized collagen product comprising acid soluble purified native collagen in combination with platelet derived growth factors and a pharmaceutical composition for enhancing wound healing comprising an aqueous solution of water soluble acid-soluble purified native collagen and platelet derived growth factors.

Abstract: A collagen coated cell growth plate comprises a substrate coated with a storage stable coating of collagen fibrils. The method of preparing the collagen coated cell growth plates comprises dispensing biologically active collagen fibrils suspended in distilled water, onto a tissue culture dish. Thereafter, the dish containing the collagen fibril suspension is placed in a laminar flow hood provided with a sterile air stream and ultraviolet light. The fibrils sediment and adhere to the bottom of the dish, the water evaporates in the sterile air stream and is removed in the laminar flow hood exhaust, and the ultraviolet light ensures that the resulting thin layer of collagen fibrils is sterile and ready for the inoculation of living cells. The method yields a convenient precoated cell growth plate which can maintain reasonable shelf life when kept at room temperature without any significant decrease in cell growth support properties.