bloodstream: the blood flowing through the circulatory system
blood: the fluid (red in vertebrates) that is pumped through the body by the heart and contains plasma, blood cells, and platelets
candle: the basic unit of luminous intensity adopted under the Systeme International d'Unites; equal to 1/60 of the luminous intensity per square centimeter of a black body radiating at the temperature of 2,046 degrees Kelvin