LISBOA-01?0145-FEDER-030254 SCML-MC-60-2014 LISBOA-01-0145-FEDER-022170 PD/BD/128426/2017 PD/BD/128437/2017 MR/S008799/1 MR/ K011200/1 DEV-170806; Formation of the vertebrate postcranial body axis follows two sequential but distinct phases. The first phase generates pre-sacral structures (the so-called primary body) through the activity of the primitive streak on axial progenitors within the epiblast. The embry...