Sambucol Â® can be used daily to maintain good health, especially during winter. Its flavonoid-rich formula concentrates the natural antioxidants found in black elderberry, which are thought to help stimulate the immune system â your bodyâs first defense against disease.ambucol Â® can be used daily to maintain good health, especially during winter. Its flavonoid-rich formula concentrates the natural antioxidants found in black elderberry, which are thought to help stimulate the immune system â your bodyâs first defense against disease.
From Wikipedia, the free encyclopedia. In the United States and Canada, a regional sports network (RSN) is a cable television channel (many of which are also distributed on direct broadcast satellite services) that presents sports programming to a local market or geographical region.
A diagram showing the workings of the virtual retinal display. A virtual retinal display (VRD), also known as a retinal scan display (RSD) or retinal projector (RP), is a display technology that draws a raster display (like a television) directly onto the retina of the eye. The user sees what appears to be a conventional display floating in space in front of them. 1 History.