| http://www.w3.org/ns/prov#value | - ity ligand of the formula: ##STR3## where M is a monovalent or divalent cation and R is agarose, polyacrylamide, an agarose-polyacrylamide copolymer, cellulose, glass or dextran cross-linked with epichlorhydrin, at a pH of below 4.0 causing the selective adsorption of the microbial rennet to the ligand thereby forming a ligand/microbial rennet complex; (b) eluting the microbial rennet from the lig
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