Respiratory pigment Respiratory pigment A respiratory pigment is a molecule, such as hemoglobin in humans and other vertebrates, that increases the oxygen-carrying capacity of the blood. The four most common invertebrate respiratory pigments are hemoglobin, hemocyanin, hemerythrin and chlorocruorin. Hemoglobin is bright red when oxygenated, and dark red(purplish) when deoxygenated, oxygenated hemocyanin is blue in colour, deoxygenated it is almost colourless. Oxygenated chlorocruorin turns from green to red, whereas oxygenated hemerythrin is a violet to pink colour and colourless when deoxygenated. Any of various coloured conjugated proteins, such as hemoglobin, occur in living organisms and function in oxygen transfer in cellular respiration.
Blue Is the Colour B-sides of the singles taken from their albums. from the "Rotterdam" CD5 from the "Don't Marry Her" CD1 from the "Don't Marry Her" CD2 Note: The French version of "Dream a Little Dream of Me" ("Les Yeux Ouverts") was recorded for the movie "French Kiss". It was re-used in the film "The Devil Wears Prada". from the "Blackbird on the Wire" CD1 from the "Blackbird on the Wire" CD2 from the "Liars’ Bar" CD1 from the "Liar's Bar" CD2 Blue Is the Colour Blue Is the Colour is the fifth studio album from English band The Beautiful South, released in