material safety data sheet, n an informational form detailing the chemical and physical properties, hazards, and ways of safely handling a toxic chemical.
BRB means be right back. It is one of the most commonly used acronyms in online chat and texting. It communicates that the person is leaving for a moment, but will be back shortly.
The bloodâbrain barrier (BBB) is a highly selective permeability barrier that separates the circulating blood from the brain extracellular fluid (BECF) in the central nervous system (CNS). small number of regions in the brain, including the circumventricular organs (CVOs), do not have a bloodâbrain barrier. The bloodâbrain barrier occurs along all capillaries and consists of tight junctions around the capillaries that do not exist in normal circulation.