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2. Milk-clotting activity of various rennets and coagulants: Background and information regarding IDF standards;Andrén;International Dairy Federation Bulletin,1998
3. Immunohistochemical studies on the development of prochymosin- and pepsinogen-containing cells in bovine abomasal mucosa;Andrén;Journal of Physiology,1982
4. Changes in immunologically and catalytically active sites of chymosin, bovine pepsin and porcine pepsin;Andrén;Netherlands Milk and Dairy Journal,1983
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