Parcel Select. Parcel Select is an economical choice for large or heavy packages and is the only USPS service that can be used for packages over 108 in girth. Cost is determined based on the distance, weight and dimensions of the mailpiece.
Definition of dopamine. : a monoamine C8H11NO2 that is a decarboxylated form of dopa and that occurs especially as a neurotransmitter in the brain.
Dopamine is a well known neurotransmitter, a chemical that transmits impulses and signals between the brain's nerve cells. It is derived from the amino acid tyrosine. Dopamine plays a dominant and diverse role in the proper functioning of the body's central nervous system.