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Ella KM, Meier GP, Bradshaw CD, Huffman KM, Spivey EC, Meier KE.Ella KM, et al. Among authors: spivey ec.Anal Biochem. 1994 Apr;218(1):136-42. doi: 10.1006/abio.1994.1152.Anal Biochem. 1994.PMID: 8053546