Hemoglobiny tkankowe bezkręgowców

In invertebrates various proteins play the role of oxygen transporter. They are dissolved in fluids of the respiratory system or present in its cells. These proteins occur also in other tissues, and therefore are called tissue hemoglobins. They play an important role evidenced by occurrence in tissues of animals possessing no other respiratory proteins in their blood or hemolymph. This paper presents the occurrence of hemoglobins in the animal kingdom and their physico-chemical properties, with special attention paid to the oxygen affinity.