respiratory pigment

== English == === Noun === respiratory pigment (plural respiratory pigments) (biochemistry) any of several coloured metal-containing protein pigments which combine reversibly with oxygen and which are found in the tissues of vertebrates and invertebrates and whose role is to transport oxygen === See also === chlorocruorin hemerythrin, haemerythrin hemocyanin, haemocyanin hemoglobin, haemoglobin