The core of the histones H2A and H2B can also be modified. Combinations of modifications are thought to constitute a code, the so-called histone code. Histone modifications act in diverse biological processes such as gene regulation, DNA repair, chromosome condensation (mitosis) and spermatogenesis (meiosis).
Bread and Circuses. Bread and circuses became the method that the ruling class of ancient Rome used to maintain their power and control of the people. This method kept their sheep fat and happy, even as they fleeced them and sent them off to plunder the free world.
In Augustan Rome, the medieval region straddled both the Campus Martius and the IX region called Circus Flaminius. Here there was the Trigarium, the stadium where the riders of the triga (a cart with three horses) used to train. During the early Middle Ages, it belonged to the 4th of the seven ecclesiastic regions.