Experimentally, it has been shown that the way to destroy a cell culture is to place it in an environment that is supersaturated with oxygen. Pure oxygen reduces the body's blood supply to its own organs and tissues, due to the reduction in carbon dioxide leading to a decrease in blood vessel pressure. When carbon dioxide is added, blood vessels begin to dilate, which increases blood flow, and more oxygen reaches critical areas such as the brain and heart causing disruption to various body functions.
Oxygen inhalation in which nitrogen acts as an inert diluent, regulates the solubility of oxygen in the blood and, together with carbon dioxide, controls the rate of all biochemical reactions in which oxygen is involved.