embryo segmentation nonhuman 10 Animals 8 biological rhythm 8 zebra fish 8 Biological Clocks 6 Body Patterning 6 Zebrafish 6 animal 6 embryo 6 gene expression 6 oscillation 6 Article 4 Basic Helix-Loop-Helix Transcription Factors 4 Gene Expression Regulation, Developmental 4 Somites 4 Vertebrata 4 Zebrafish Proteins 4 animal experiment 4 article 4 basic helix loop helix transcription factor 4 controlled study 4 embryo development 4 embryonic structures 4 genetics 4 her1 protein, zebrafish 4 molecular dynamics 4 morphogenesis 4 periodicity 4 physiology 4