calcium chloride (CaCl 2), a granular white chemical with an unpleasant taste. It is used in a concentrated solution of the chloride salt of calcium to replenish calcium in the blood and also has uses in cardiac resuscitation.
Neuropeptides are small protein-like molecules (peptides) used by neurons to communicate with each other. They are neuronal signaling molecules that influence the activity of the brain in specific ways.
Small, biologically active peptides (short sequences of amino acids) were first described about 40 years ago: TRH, angiotensin, vasopressin, oxytocin, bradykinin. Since then, many more peptides have been isolated from mammalian tissue and organs, and. their activity investigated.