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Bennett JT Stickney HL Choi WY Ciruna B Talbot WS Schier AF 《Nature》2007,450(7167):E1-2; discussion E2-4
In fish and amphibians, the dorsal axis is specified by the asymmetric localization of maternally provided components of the Wnt signalling pathway. Gore et al. suggest that the Nodal signal Squint (Sqt) is required as a maternally provided dorsal determinant in zebrafish. Here we test their proposal and show that the maternal activities of sqt and the related Nodal gene cyclops (cyc) are not required for dorsoventral patterning. 相似文献
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