48 hour chick embryo serial cross section

Subsequently, animals became independent of water for reproduction and took the opportunity to explore terrestrial habitats. Only oxygen and heat were still required from the environment. The amniote egg contained all the materials needed for the embryo to develop: sufficient water, nutrients and energy. The appearance of the amniote egg, an evolutionary novelty from the amphibian ancestors of the reptiles, opened new evolutionary paths. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.Ĭompeting interests: The authors have declared that no competing interests exist.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.įunding: This research was supported by the European Commission’s Lifelong Learning Programme (Leonardo da Vinci 2011-1-PT1-LEO02-08199) to AMB and by the Netherlands organization of Scientific Research (NWO) (ASPASIA 015.007.037) and the Interuniversity Attraction Poles-Phase VII (IUAP/PAI P7/14) to AMB and SMCSL. Received: OctoAccepted: FebruPublished: March 19, 2014Ĭopyright: © 2014 de Melo Bernardo, Chuva de Sousa Lopes. PLoS ONE 9(3):Įditor: Leonard Eisenberg, New York Medical College, United States of America

Citation: de Melo Bernardo A, Chuva de Sousa Lopes SM (2014) The Involvement of the Proamnion in the Development of the Anterior Amnion Fold in the Chicken.

48 hour chick embryo serial cross section