This timelapse video shows zebrafish development from a single cell to 22 hours after fertilization. The embryo has a transgene (fli1a:EGFPy1) that labels blood vessels green. Footage was collected using a Nikon Ti2 with a CSU-W1 spinning disk confocal and a 4X objective. Credit: Daniel Castranova, @nichd_nih . . . #zebrafish #cell #cells #fertilization #biology #embryo #sciart #coolscienceimage #scienceimage #scienceanimation #research #science #NIH