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Albrecht U, Abu-Issa R, Rätz B, Hattori M, Aoki J, Arai H, Inoue K, Eichele G.Albrecht U, et al. Among authors: eichele g.Dev Biol. 1996 Dec 15;180(2):579-93. doi: 10.1006/dbio.1996.0330.Dev Biol. 1996.PMID: 8954729Free article.
Yamada M, Szendro PI, Prokscha A, Schwartz RJ, Eichele G.Yamada M, et al. Among authors: eichele g.Dev Biol. 1999 Nov 1;215(1):48-61. doi: 10.1006/dbio.1999.9419.Dev Biol. 1999.PMID: 10525349Free article.