Sequential and Rhythmic Production of Somites

Sequential and Rhythmic Production of Somites - Illustrated with the developing zebrafish embryo, somitogenesis is a sequential and rhythmic process that subdivides the mesoderm of the vertebrate embryo. The segmented nature of future vertebrae and body muscles can be appreciated from their chevron-shaped embryonic precursors. This timelapse movie begins just before the first somite is formed from the anterior end of the presomitic mesoderm (PSM) and ends after the last somite has been