The PHS Policy covers all live vertebrate animals. If an embryo hasn't hatched yet, or an early-larval-stage fish hasn't used up its yolk sac yet, is it not still a vertebrate animal? My facility ...

“In the current study, we aimed to find out how that process continues down the length of the embryo to generate the typical elongated ‘torpedo’ shape of the larva.” To answer this ...

This time-lapse video shows the development of the nervous system in a fruit fly embryo as it transitions to the larval stage. Fruit flies have a high reproduction rate and a very short gestation ...

Hebrew University researchers say they have discovered that fish embryos are able to decide when they want to be born. Dr. Matan Golan from the university’s Volcani Institute, who led the team ...

Scientists have uncovered a key mechanism in jellyfish embryos that provides new insights into how the body plan of these animals develops along a central axis from their "head" to "tail.

Zebrafish Embryo - Dr. Philipp Keller and Raghav K. Chhetrii Janelia Research Campus, Howard Hughes Medical Institute / Ashburn, Virginia, USA / Spatially isotropic whole-animal functional imaging ...

Information deposited in the embryo by the fly mother is translated into genetic and molecular instructions that drive the precise placement of stripes on the developing fly larva.

As they develop, Drosophila progress through three main stages—embryo, larva, and pupa—before emerging as adult fruit flies. Virtually all body growth occurs in the larval stage, during which the ...