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On April 17, the article Circular permutation in proteins - about a way in which proteins evolve - was featured on the English Wikipedia's Main Page under DYK (Traffic stats). The article has recently been significantly expanded by way of an article in PLoS Computational Biology - the first in the new manuscript track for Topic Pages, which serve as the version of record for dynamically evolving Wikipedia entries. The initiative was also featured on the PLoS blog. In the meantime, another article within that manuscript track has been drafted, and other journals have signaled an interest in similar experiments.
The integration of Wikimedia and Open Access within the wider context of collaborative platforms for Open Science was the subject of two talks given at the Third International Conference on Open Access in Poland in Bydgoszcz on April 13, 2012 and at the Turkic Wikimedia Conference 2012 in Almaty on April 20, 2012.
The following files have been featured as Open Access File of the Day in April:
April 30: The bird-of-paradise Paradisaea raggiana.
April 29: Reconstruction of Anatosuchus minor.
April 28: The chameleon Bradypodion damaranum.
April 27: CT scan of a craniopharyngioma.
April 26: Salmonella enterica ssp. enterica ser. Typhimurium.
April 25: Geographic distribution of emu taxa and historic shoreline reconstructions around Tasmania.
April 24: The shell Bulgarica denticulata.
April 23: The remipede Speleonectes tanumekes.
April 22: Melitaea cinxia.
April 21: Flabellina affinis feeding on Eudendrium racemosum.
April 20: The wasp Leptofoenus pittfieldae in Dominican amber.
April 19: Mating in the sea slug Elysia timida.
April 18: Computed tomography of a patient with Cherubism, showing bone malformation in both the mandible and the maxilla.
April 17: Life restoration of Aegisuchus witmeri.
April 16: The butterfly Coenonympha hero.
April 15: Map of localities from which Paedophryne frogs have been reported.
April 14: Congenital hereditary endothelial dystrophy.
April 13: Gene expression in Drosophila melanogaster. Scale bar: 100 μm.
April 12: Sociobiologist and entomologist Edward O. Wilson.
April 11: Forest on the island of Nosy Hara in Northern Madagascar.
April 10: Dilophosaurus wetherilli in a bird-like resting pose.
April 9: HE staining of chicken optic tectum with the layered subventricular zone. Scale bar 200 μm.
April 8: The frog Paedophryne dekot, one of the smallest species of vertebrates.
April 7: Rhinophores in the slug Aplysia californica.
April 6: A Cape sugarbird (Promerops cafer).
April 5: Tissue necrosis following a bite from Bothrops asper.
April 4: Autoradiography of a saggital slice from an embryonal rat brain. Scale bar: 2mm.
April 3: A male Enyalioides rubrigularis lizard.
April 2: The diatom Phaeodactylum tricornutum.
April 1: Paleogeography of North America during the Late Cretaceous (File was deleted due to inaccurate license).