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Lawrence N, Klein T, Brennan K, Martinez Arias A.Lawrence N, et al. Among authors: brennan k.Development. 2000 Jul;127(14):3185-95. doi: 10.1242/dev.127.14.3185.Development. 2000.PMID: 10862754
Lawrence N, Langdon T, Brennan K, Arias AM.Lawrence N, et al. Among authors: brennan k.Curr Biol. 2001 Mar 20;11(6):375-85. doi: 10.1016/s0960-9822(01)00120-8.Curr Biol. 2001.PMID: 11301248Free article.