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Ingraham HA, Lala DS, Ikeda Y, Luo X, Shen WH, Nachtigal MW, Abbud R, Nilson JH, Parker KL.Ingraham HA, et al. Among authors: nachtigal mw.Genes Dev. 1994 Oct 1;8(19):2302-12. doi: 10.1101/gad.8.19.2302.Genes Dev. 1994.PMID: 7958897Free article.