Therefore, if you're planning a long journey, you should always apply for the Russian visa before you leave. It's possible to get a tourist visa support at any moment before your journey, however, you can only apply for a tourist visa not earlier than 90 days before the date of your first entry to Russia.
Serotonin is a common neuromediator in the brain. It belongs to the group of so-called biogenic amines, relatively simple chemicals that facilitate the transfer of signals between the cells of the body.
1. Serotonin acts as type of chemical known as a neurotransmitter. It helps relay signals from one area of the brain to another. Although serotonin is made in the brain, where it performs its main functions, some 90% of our serotonin supply is found in the digestive tract and in blood platelets.t helps relay signals from one area of the brain to another. Although serotonin is made in the brain, where it performs its main functions, some 90% of our serotonin supply is found in the digestive tract and in blood platelets.