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
Color Me Blood Red Color Me Blood Red Color Me Blood Red is a 1965 splatter film written and directed by Herschell Gordon Lewis about a psychotic painter who murders civilians and uses their blood as red paint. It is the third part of what the director's fans have dubbed "The Blood Trilogy", including "Blood Feast" (1963) and "Two Thousand Maniacs!" (1964). At the Farnsworth Galleries, Farnsworth looks at a painting then takes it outside. He drops it to the ground, saturates it with gasoline and sets it afire. Blood pours out of the canvas as it burns. Artist Adam Sorge stands before a