Red blood cell endothelial cells. Exposure of red blood cells to physiological levels of shear stress activates nitric oxide synthase and export of nitric oxide, which may contribute to the regulation of vascular tonus. Red blood cells can also produce hydrogen sulfide, a signalling gas that acts to relax vessel walls. It is believed that the cardioprotective effects of garlic are due to red blood cells converting its sulfur compounds into hydrogen sulfide. Red blood cells also play a part in the body's immune response: when lysed by pathogens such as bacteria, their hemoglobin releases free radicals, which break down the pathogen's cell
The Blood Cell characterisation perfectly". The audio addition to the book was released on 13 November 2014, read by Colin McFarlane who played General Austin Pierce in "" and guest starred in the "Doctor Who" episodes "Under the Lake" and "Before the Flood" as Moran. This was the first new series audio to be released since AudioGo went into administration in 2013. The Blood Cell The Blood Cell is a BBC Books original novel written by James Goss and based on the long-running British science fiction television series "Doctor Who". It features the Twelfth Doctor and Clara Oswald. The book was released on