Comparative studies of the respiratory functions of mammalian blood IV. Fetal and adult african elephant blood

摘要: Abstract Blood from a 5-month-old elephant fetus shows, in addition to adult hemoglobin, component which moves more slowly an electrophoretic field, is heat labile, oxidized rapidly by potassium ferricyanide and sodium nitrite presents definite tryptophane band the ultraviolet region at 290 nanometers. Since hemoglobin of did not show these characteristics, fraction can be designated as fetal hemoglobin. In 12-month-old fetus, this could identified. The shift synthesis type essentially concluded first third pregnancy, characteristics similar those humans. erythrocytes both elephants resembled human their decreased osmotic resistance significantly lower carbonic anhydrase activity when compared adult. On other hand, increased reducing found red cells contrast opposite relationship that has been previously reported 5-month 15% whose type, oxygen affinity identical with elephants. 12-month no detectable blood greater than elephant.