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Hemoglobin (haemoglobin, [a] Hb or Hgb) is a protein containing iron that facilitates the transportation of oxygen in red blood cells. Almost all vertebrates contain hemoglobin, [ 3 ] with the sole exception of the fish family Channichthyidae . [ 4 ]
A:Normal red blood cells are shown flowing freely in a blood vessel on the top of the diagram. The inset image shows a cross-section of a normal red blood cell with normal hemoglobin. B:Demonstrates abnormal, sickled red blood cells blocking blood flow in a blood vessel (vaso-occlusive crisis). The inset image shows a cross-section of a sickle ...
0.5-1.5% total Hb smokers, 1-2 packs/day 4-5% total Hb smokers, 2 packs/day 8-9% total Hb toxic >20% total Hb lethal >50% total Hb Carcinoembryonic antigen <2.5 × 10 −9: beta-Carotene: Vitamin A dimer 3-25 × 10 −7: Carotenoids: Antioxidant 2.4-23.1 × 10 −7: Cephalin: 3-11.5 × 10 −4: 0-1 × 10 −4: Ceruloplasmin: 1.5-6 × 10 −4 ...
Diagram showing the development of different blood cells from hematopoietic stem cells to mature cells. A blood cell (also called a hematopoietic cell , hemocyte , or hematocyte ) is a cell produced through hematopoiesis and found mainly in the blood .
Hemoglobin (Hb) is the primary vehicle for transporting oxygen in the blood. Each hemoglobin molecule has the capacity to carry four oxygen molecules. These molecules of oxygen bind to the globin chain of the heme prosthetic group. [1] When hemoglobin has no bound oxygen, nor bound carbon dioxide, it has the unbound conformation (shape). The ...
Glycated hemoglobin, also called glycohemoglobin, is a form of hemoglobin (Hb) that is chemically linked to a sugar. [note 1] Most monosaccharides, including glucose, galactose, and fructose, spontaneously (that is, non-enzymatically) bond with hemoglobin when they are present in the bloodstream. However, glucose is only 21% as likely to do so ...
Haemoglobin (Hb) Myoglobin (Mb) Neuroglobin: a myoglobin-like haemprotein expressed in vertebrate brain and retina, where it is involved in neuroprotection from damage due to hypoxia or ischemia. [11] Neuroglobin belongs to a branch of the globin family that diverged early in evolution. Cytoglobin: an oxygen sensor expressed in multiple tissues ...
Hemoglobin variants occur when there are mutations in specific genes that code for the protein chains, known as globins, which make up the hemoglobin molecule. This leads to amino acid substitutions in the hemoglobin molecule that