Examples of albumins in the following topics:
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- By definition chemically defined media cannot contain either fetal bovine serum, bovine serum albumin, or human serum albumin as these products are derived from bovine or human sources and contain complex mixes of albumins and lipids.
- The term 'chemically defined media' is often misused in the literature to refer to serum albumin-containing media.
- Animal serum or albumin is routinely added to culture media as a source of nutrients and other ill-defined factors, despite technical disadvantages to its inclusion and its high cost.
- Chemically defined media differ from serum-free media in that bovine serum albumin or human serum albumin with either a chemically defined recombinant version (which lacks the albumin associated lipids) or synthetic chemical such as the polymer polyvinyl alcohol which can reproduce some of the functions of serums.
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- The largest group of solutes in plasma contains three important proteins: albumins, globulins, and clotting proteins.
- Albumins, produced in the liver, make up about two-thirds of the proteins in plasma.
- Albumins maintain the osmotic balance between the blood and tissue fluids.
- Plasma that is pulled into the tissues by albumin-exerted oncotic pressure becomes interstitial fluid.
- Serum still contains albumin and globulins, which are often called serum proteins as a result.
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- Human serum albumin is the most abundant protein in human blood plasma.
- Albumin constitutes about half of the blood serum protein.
- Albumin transports hormones, fatty acids, and other compounds, buffers pH, and maintains osmotic pressure, among other functions.
- Albuminuria is a pathological condition wherein albumin is present in the urine.
- Kidneys affected by nephrotic syndrome have small pores in the podocytes, large enough to permit proteinuria (and subsequently hypoalbuminemia, because some of the protein albumin has gone from the blood to the urine) but not large enough to allow cells through (hence no hematuria).
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- The size of the filtration slits restricts the passage of large molecules (eg, albumin) and cells (eg, red blood cells and platelets), which are the non-filterable component of blood, which then leave the glomerulus through the efferent arteriole, which becomes capillaries meant for kidney oxygen exchange and reabsorption before becoming venous circulation.
- The positively charged podocytes will impede the filtration of negatively charged particles as well (such as albumins).
- Osmotic pressure (ie. the pulling force exerted by albumins) works against the greater force of hydrostatic pressure, and the difference between the two determines the "effective pressure" of the glomerulus which determines the force by which molecules are filtered.
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- Human serum albumin, the most abundant protein in human blood plasma, is synthesized in the liver.
- Albumin, which constitutes about one-half of the blood serum protein, transports hormones and fatty acids, buffers pH, and maintains osmotic pressures.
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- The heat from a pan denatures the albumin protein in the liquid egg white and it becomes insoluble.
- (Top) The protein albumin in raw and cooked egg white.
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- Plasma is mostly water (93% by volume) and contains dissolved proteins (major proteins are fibrinogens, globulins and albumins), glucose, clotting factors, mineral ions (Na+, Ca++, Mg++, HCO3- Cl- etc.), hormones and carbon dioxide (plasma being the main medium for excretory product transportation).
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- The membrane can then be blocked with serum albumin or milk solution to prevent non-specific antibody binding.
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- The albumin, or egg white, provides the embryo with water and protein, whereas the fattier egg yolk is the energy supply for the embryo, as is the case with the eggs of many other animals, such as amphibians.
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- The level of permeability is such as to allow small and medium-sized proteins, such as albumin, to readily enter and leave the blood stream.