In this early work, however, the activating effects of the natural ligand, acetylcholine, were not measured and, also, atropine apparently only partially inhibited the receptor. In the current paper, therefore, we recloned this receptor (named A-type mAChR) and found that the cDNA sequence published in Shapiro et al.
At an early age we learn that the color of the water in our lakes, rivers and ponds is blue, but we expect the water in our drinking glass to be clear. When homeowners discover their home drinking water has a slight blue tint, itâs cause for concern. Blue or blue-green water likely means it contains copper.
Blue-Green Stains â Thatâs Acidic Water. Acidic water is corrosive to your pipes, which then leaves blue green stains in your fixtures. This causes the water to taste bitter and metallic, and can increase the amount of copper and lead in your drinking water. Because the acid is eating away at your pipes, it can eventually cause pin-hole leaks. Acidic water means a low pH BELOW 7.0.