You only need the English Proficient for international operations as it's an ICAO thing. Some countries, like France, check; others may not. Similar on the RRTO -- some countries, like Canada and the Bahamas don't require it, but others, like Turks & Caicos, do require it and do check it.
Apoptosis, or programmed cell death, is a naturally occurring process in the body. It involves a controlled sequence of steps in which cells signal self termination. Apoptosis works to keep the body's natural cell division process of mitosis in check.
Overview of Apoptosis. Apoptosis is the tightly controlled pattern of cell death necessary for typical growth and development in multicellular organisms. Defective apoptosis can result in abnormal development and pathogenesis. Caspases cleave target proteins at specific amino acid residues during a programmed proteolytic cascade.