The rat-tailed sea cucumber, Paracaudina chilensis, has abundant hemoglobin-filled hemocytes in its perivisceral coelom, water vascular system, and hemal system. The perivisceral oxyhemoglobin ...

The tangled mass of tubing, disks and light bulbs unveiled before a packed meeting of the Royal Society of scientists in London looked for all the world like an outsize example of abstract sculpture.

Hemoglobin is an iron-rich protein in red blood cells that enables the blood to carry oxygen to tissues throughout the body. Low hemoglobin levels often indicate anemia, but high levels can also be a ...