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 neurotransmitter, a chemical responsible for sending messages between the brain and different nerve cells of the body. Over the past 60 years, dopamine has been studied extensively and has been written about in over 110,000 research articles, mainly identifying its relationship with Parkinson's disease, drug addiction and mood disorders.