The modulatory neurotransmitters activate G protein-coupled receptors, which share signal transduction systems in cells. In addition to regulating key physiological functions, these systems are ...
There are two types of removal: Re-uptake – the neurotransmitter is reabsorbed back into the presynaptic neuron and restored inside a vesicle ready to be used again. For example, noradrenaline.
This raises the question whether it’s necessary to continue to test for COVID when you have symptoms, as guidelines once suggested. While the CDC no longer urges people to get tested ...