Like organelles within a single cell, whole new specializations began to develop.

Turacin is nearly 6% copper.

This famous medieval manuscript has many descendants.

During this man's imprisonment, he had adopted every available means of reducing himself; and as his name was called for trial, he was seen thumping his elbows violently against the walls of the dock, to effect a temporary suspension of the circulation, and cadaverise his countenance.