These unusual blood colors are not just for show ... Its blood contains hemerythrin, a rare iron-based respiratory pigment. Hemerythrin gives the blood a purplish or violet hue and helps these ...

Some worms use purplish hemerythrin; others use greenish chlorocruorin; some use a combination of pigments. It may seem puzzling that so many varieties of blood exist, and more puzzling still that ...

This is because the molecule that carries the oxygen is a type of blood pigment, known as hemerythrin, which is described as pink or purple. A few species of segmented worms don’t have any ...

Brachiopods: These marine organisms have hemerythrin, a pigmented protein that causes their blood to appear faintly yellow or colorless when deoxygenated, and violet to pinkish when oxygenated.

The substitute is a mix of hemerythrin, salt and albumin—a plasma cocktail that he believes can be refined and mixed with water to someday make “instant blood.” Although there’s the ...

Their blue blood contains hemocyanin, which turns blue when it binds with oxygen. Their blood can appear purple due to the presence of a pigment called hemerythrin, which is purple when oxygenated.