Mouse gastrulation

This video represents mouse gastrulation starting at pre-streak stage (E5.5) through early somite stage embryos (E8.5) ectoderm is in purple (epiblast at bottom and extraembryonic ectoderm top) visceral endoderm is in yellow streak-derived mesoderm and endoderm are in red Processes depicted are: primitive streak formation and elongation amnion and chorion formation allantois extension and fusion with chorion to form chorioallantoic placenta growth of head and heart at anterior (left) aspect of embryo soundrack: Philip Glass "The secret agent" played by Angele Dubeau La Pieta created by Annie Poon in collaboration with Mary Madabhushi