When the nanofiber spheres, which are slightly bigger than the cells they carry, degrade at the wound site, the cells they are carrying have already gottena good start growing because the nanofiber spheres provide an environment in which the cells naturally thrive.
These particular snakes are believed to have gotten their startin the Everglades through the well-intentioned, but ill-considered, action of a few Americans who thought they were doing the humane thing by turning their pet pythons loose in the swampy wilderness.