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Braun RE, Lo D, Pinkert CA, Widera G, Flavell RA, Palmiter RD, Brinster RL.Braun RE, et al.Biol Reprod. 1990 Oct;43(4):684-93. doi: 10.1095/biolreprod43.4.684.Biol Reprod. 1990.PMID: 1963095