Yet on the whole, the niacin flush is associated with beneficial health effects. Niacin specifically activates the high affinity G-protein coupled receptors, GPR109a and b, which then leads to release of a variety of prostaglandins that results in the flush response.
professional courtesy is something to be given by the off duty officer to an on duty officer not the other way around a working cop may use discretion on minor violations without fear of repercussions this consideration is extended to citizens and certainly can also be extended to off duty cops
Hi, native speaker friends: I keep seeing online photos with a line beneath saying: courtesy of blah blah blah.... I can tell it means the photo is taken by that person, right? But why say courtesy of..? What does it have anything to do with courtesy? I don't understand. Thanks in advance.