Zebrafish Movies
These movies show a normal and a mutant zebrafish embryo at 48 hours after fertilization. Click on each thumbnail to see a full-size QuickTime movie. (Each movie requires Apple's QuickTime player. Download the QuickTime player for PC or Macintosh from Apple.)
 | Movie 1. Normal zebrafish embryo. The heart can easily be seen beating, and circulation of individual blood cells through the blood vessels is observed. |
 | Movie 2. Mutant embryo without endocardial cushion development (cardiofunk). This embryo lacks endocardial cushions; thus when the ventricle contracts blood moves backward into the atrium instead of forward into the higher-resistance aorta. Despite the lack of circulation, the embryo otherwise develops normally for 4-5 days, allowing ample time for analysis of heart morphogenesis before embryonic lethality. |
