There are also two large blue-colored regions in the composite image. these blue regions are labeled as "dark matter" based on

There are also two large blue-colored regions in the composite image. These blue regions are labeled as "dark matter" based on observations of gravitational lensing by the cluster.

A gravitational lens is a distribution of matter (such as a cluster of galaxies) between a distant light source and an observer, that is capable of bending the light from the source as the light travels towards the observer.

dopamine..

"it was found that some people who were taking the drug l-dopa to raise their levels of dopamine were developing schizophrenic-like symptoms supporting research a strength of the dopamine hypothesis is that there are many studies which have shown support for the neurochemical explanation."

b.transmitters send radio waves, and receivers capture radio waves.