Red blood cell oxygen has been released the resulting deoxyhemoglobin is of a dark red burgundy color. However, blood can appear bluish when seen through the vessel wall and skin. Pulse oximetry takes advantage of the hemoglobin color change to directly measure the arterial blood oxygen saturation using colorimetric techniques. Hemoglobin also has a very high affinity for carbon monoxide, forming carboxyhemoglobin which is a very bright red in color. Flushed, confused patients with a saturation reading of 100% on pulse oximetry are sometimes found to be suffering from carbon monoxide poisoning. Having oxygen-carrying proteins inside specialized cells (as opposed to oxygen carriers
Blood Car more "Blood Cars" after the original is destroyed, and his existence is erased. Archie is concerned where the fuel for the new cars will come from, and the federal agents promise him it will come from invalids, convicted criminals, and the homeless. Archie agrees. Images of Archie's rise as President are cut with the government agents murdering Lorraine, Denise, his kindergarten students, and anyone that saw him developing the Blood Car. "Blood Car" has been shown at various film festivals, including: "Blood Car" was winner of the New Visions Award at the 2007 Cinequest Film Festival. Winner - Best Narrative