Scientists have long wondered how cells organized into sheets begin to move together to form organs, especially when the sheets form closed, sphere-like surfaces and tissues with no edges to direct motion.
This is a short WorldPing brief. The full report was published by Phys.org.
The brain cells you see in the above image help an African fish decode electric signals to spot prey, scan its murky surroundings and communicate with its fellows.
Brief by WorldPing · Original reporting by Phys.org