Entdeckung -- Antarktis. : Footsteps on the ice : the Antarctic diaries of Stuart D. Paine, second Byrd Expedition / edited with an introduction by M.L. Paine
Entente : The war of guns and mathematics : mathematical practices and communities in France and its western allies around World War I / David Aubin, Catherine Goldstein, editors
A biochemical messenger and regulator, synthesized from the essential amino acid L-TRYPTOPHAN. In humans it is found primarily in the central nervous system, gastrointestinal tract, and blood platelets. Serotonin mediates several important physiological functions including neurotransmission, gastrointestinal motility, hemostasis, and cardiovascular integrity. Multiple receptor families (RECEPTORS, SEROTONIN) explain the broad physiological actions and distribution of this biochemical mediator
HORMONES secreted by the gastrointestinal mucosa that affect the timing or the quality of secretion of digestive enzymes, and regulate the motor activity of the digestive system organs