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Protein precipitation is widely used in downstream processing of biological products in order to concentrate proteins and purify them from various contaminants. For example, in the biotechnology industry protein precipitation is used to eliminate contaminants commonly contained in blood. [ 1 ]
Ammonium sulfate precipitation is a useful technique as an initial step in protein purification because it enables quick, bulk precipitation of cellular proteins. [4] It is also often employed during the later stages of purification to concentrate protein from dilute solution following procedures such as gel filtration .
Immunoprecipitation of intact protein complexes (i.e. antigen along with any proteins or ligands that are bound to it) is known as co-immunoprecipitation (Co-IP). Co-IP works by selecting an antibody that targets a known protein that is believed to be a member of a larger complex of proteins.
Coagulative necrosis is a type of accidental cell death typically caused by ischemia or infarction. In coagulative necrosis, the architectures of dead tissue are preserved for at least a couple of days. [1] It is believed that the injury denatures structural proteins as well as lysosomal enzymes, thus blocking the proteolysis of the damaged cells.
Concentrated nitric acid is added to a protein solution from the side of the test tube to form two layers. A white ring appears between the two layers if the test is positive. [1] Heller's test is commonly used to test for the presence of proteins in urine. [2] This test was discovered by the Austrian Chemist, Johann Florian Heller (1813-1871).
Eddie August Schneider's (1911–1940) death certificate, issued in New York.. A death certificate is either a legal document issued by a medical practitioner which states when a person died, or a document issued by a government civil registration office, that declares the date, location and cause of a person's death, as entered in an official register of deaths.
Certificates of Death (‹See Tfd› German: Scheine des Todes) is a 1923 German silent film directed by Lothar Mendes and starring Alfred Abel, Eva May, and Iván Petrovich. [ 1 ] The film's sets were designed by the art director Stefan Lhotka .
Electronic health records, [87] [88] [54] death certificates [89] [56] [90] [91] as well as post-mortem analyses (such as post-mortem computed tomography and other other pathology) [92] can and are often used to investigate underlying causes of deaths such as for mortality statistics, [93] [94] relevant to progress measurements. [95]