Noun
English Wikipedia has an article on:hemocyaninWikipedia
hemocyanin (countable and uncountable, plural hemocyanins)
(biochemistry) a blue copper-containing respiratory pigment (a metalloprotein) found in most molluscs, and some arthropods
Although less efficient under normal conditions than the iron -rich hemoglobin of vertebrates, in cold conditions with low oxygen pressure, hemocyanin oxygen transportation is more efficient than hemoglobin oxygen transportation. Source: Internet
Other animals use hemocyanin ( molluscs and some arthropods ) or hemerythrin ( spiders and lobsters ). Source: Internet
This is due to change in color of hemocyanin when it is oxidized. Source: Internet
Unlike hemocyanin and hemoglobin, hemovanadin is not an oxygen carrier. Source: Internet