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Wu ZL, Thomas SA, Villacres EC, Xia Z, Simmons ML, Chavkin C, Palmiter RD, Storm DR.Wu ZL, et al. Among authors: villacres ec.Proc Natl Acad Sci U S A. 1995 Jan 3;92(1):220-4. doi: 10.1073/pnas.92.1.220.Proc Natl Acad Sci U S A. 1995.PMID: 7816821Free PMC article.