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A new mathematical model for relative quantification in real-time RT-PCR

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Life Sciences, Molecular Biology, Gene Expression +12

Sonic hedgehog mediates the polarizing activity of the ZPA

Robert D. Riddle, Randy L. Johnson, Ed Laufer et al. · Cell · 1993 · 2.3K citations

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Neural Crest and the Origin of Vertebrates: A New Head

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Expression of a Delta homologue in prospective neurons in the chick

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Midbrain development induced by FGF8 in the chick embryo

Philip H. Crossley, Salvador Martı́nez, Gail R. Martin · Nature · 1996 · 739 citations

Life Sciences, Developmental Biology, Neuroscience +14