Despite their small size, they have immense biological significance in molecular biology: peptides function as a peptide hormone like PPY, enzymes, neurotransmitters, and signal molecules that mediate immune responses, cell signaling, tissue repair, and metabolic regulation
brimonidine, clonazoline, fenoxazoline, indanazoline, naphazoline, oxymetazoline, tetryzoline, tramazoline, xylometazoline) and those stimulants included in the 2026 Monitoring Program* * Bupropion, caffeine, nicotine, phenylephrine, phenylpropanolamine, pipradrol, and synephrine: These substances are included in the 2026 Monitoring Program and are not considered Prohibited Substances
Schiller et al., 1993)
Plasma from patients with pulmonary embolism show aggregates that reduce after anticoagulation