BACKGROUND: The disruption of the blood–brain barrier (BBB) is a central pathogenic event in many central nervous system disorders. However, the mechanisms regulating BBB function remain incompletely ...

Nitrogen, upon which all life on Earth depends, may hold the key for explaining how early life on the planet evolved and how it could evolve on other planets. "All living organisms need nitrogen to ...

There are many types of digestive enzymes and specific enzymes break down specific macronutrients (proteins, fats, carbohydrates, dairy, and fiber). “We naturally make our own digestive enzymes, ...