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Ashwell MS, Da Y, Van Tassell CP, Vanraden PM, Miller RH, Rexroad CE Jr.Ashwell MS, et al. Among authors: van tassell cp.J Dairy Sci. 1998 Dec;81(12):3309-14. doi: 10.3168/jds.S0022-0302(98)75896-5.J Dairy Sci. 1998.PMID: 9891277Free article.