By using phytotron, critical temperature and the thermo-sensitive phase of Pingxiang Dominant Genic Male Sterile Rice were studied under artificial conditions.
The extra energy of the unbroken symmetry state would then be released and would reheat the universe to a temperature just below the critical temperature for symmetry between the forces.
Bosons, on the other hand, when they get below a critical temperature, they're like five-year-olds on a soccer field, so they don't have a concept of formation, they just bunch up together.