Heart Shape Carefully Arranged

Heart shape carefully arranged, as described in Nature, vol 427, p309, 22 January 2004. During embryonic development mammal and human hearts, with their four chambers and complex arrangement of vessels and valves, develop from a simple tube. In order to understand how this process happened, Sigolene Meilhac and colleagues labelled cells in the heart tube […]

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Fishy Leg Story

Fishy leg story reported in ScienceDaily 10 December 2012 and New Scientist 15 December 2012. In an attempt to see how fish fins could have developed into legs in order for evolving land animals to take their first steps, Fernando Casares of the Spanish National Research Council and colleagues injected zebrafish embryos with extra copies […]

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