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.
1 Blue or Green Color-A green or blue color is generally a result of copper in your water supply, or copper pipes and corrosive water (1). 2  The copper can cause staining of your fixtures and your laundry. 3  Copper is regulated in drinking water by the EPA at 1.3 PPM.