: Euclidean length involving the centers-of-mass of the exact same nucleus at two consecutive time factors. Paired landmarks (purple spheres) absolutely are a number of landmarks such as The situation with the somites, the posterior-proximal most region in the tailbud or posterior primitive streak, the anterior-most conclude from the notochord http://fx-tower92334.blogginaway.com/395306/toto-site-an-overview