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 ...

There are many levels at which a scientific question can be answered. An answer that is quite satisfying to a scientist from one discipline may be totally unsatisfactory to a scientist from another.

Proceedings of the National Academy of Sciences of the United States of America, Vol. 89, No. 24 (Dec. 15, 1992), pp. 11696-11700 (5 pages) Animal globin genes have two introns at strictly conserved ...

Sickle cell disease (SCD) is a genetic disorder that causes red blood cells to take the shape of a sickle or a letter “C.” Levels of hemoglobin, a protein that helps carry oxygen on red blood cells, ...