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any of a large family of proteinsprotein,
any of the group of highly complex organic compounds found in all living cells and comprising the most abundant class of all biological molecules. Protein comprises approximately 50% of cellular dry weight.
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 of a spherical or globular shape that are widely distributed throughout the plant and animal kingdoms. Many of them have been prepared in pure crystalline form. The term globulin is a partly procedural one, used in classifying an otherwise diverse group of proteins that are soluble in water or dilute salt solutions. Among the most important are the immunoglobulins (Ig), the antibodies of the immune system (see immunityimmunity,
ability of an organism to resist disease by identifying and destroying foreign substances or organisms. Although all animals have some immune capabilities, little is known about nonmammalian immunity.
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). They are classified into five types based upon structure: IgA, IgD, IgE, IgG, and IgM. IgG or &ggr;-globulin is the most common and forms about 70% of the immunoglobins in the blood. Other globulins are involved in the transport of a variety of substances, including lipidslipids,
a broad class of organic products found in living systems. Most are insoluble in water but soluble in nonpolar solvents. The definition excludes the mineral oils and other petroleum products obtained from fossil material.
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, hormoneshormone,
secretory substance carried from one gland or organ of the body via the bloodstream to more or less specific tissues, where it exerts some influence upon the metabolism of the target tissue.
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, and inorganic ions.


A general name for any member of a heterogeneous group of serum proteins precipitated by 50% saturated ammonium sulfate. See Protein, Serum

The introduction of electrophoresis during the 1930s permitted subdivision of the globulins into alpha, beta, and gamma globulins on the basis of relative mobility at alkaline pH (8.6). However, each of these subgroups, though electrophoretically homogeneous, consists of a great variety of proteins with different biological properties and markedly different sizes and chemical properties other than net charge. Thus the α2-globulins, for example, as defined by moving boundary or paper electrophoresis, contain proteins ranging in molecular weight from approximately 50,000 to approximately 1,000,000 (α2-macroglobulin), each with differing functions. See Immunoglobulin


A heat-labile serum protein precipitated by 50% saturated ammonium sulfate and soluble in dilute salt solutions.


any of a group of simple proteins, including gamma globulin, that are generally insoluble in water but soluble in salt solutions and coagulated by heat
References in periodicals archive ?
You can use ALG to study for a wide range of qualifications, including BTECs, NVQs, GSCEs and A levels across a huge range of subject areas: from business to construction, science to hairdressing and childcare to publishing.
Call in at your local college to talk to someone about an ALG and what you can study.
One of the most popular ALG features has been the message boards where members post questions, share ideas, and get instant feedback from other local officials.
Diaped is a division of ALG, which is marketed by Algeos India and supports Franchise set-ups for Diabetic Amputation Prevention.
This ALG was made up of Pierced Steel Plate (PSP) sheets.
Two bile salts, including oxgall bile salt and taurocholic acid, were used to test the bile tolerance of probiotic bacteria entrapped in ALG and POPL microcapsules.
With her main worry being finding adequate childcare for her son, Louise says ALG means she does not have to worry about paying the pounds 10-15 a week for the college creche out of the family income.
The ALG aims to encourage individuals to return to education by offering a helping hand to contribute to things like books, travel and learning materials while they study.
In pilot areas, ALG has already started to help people cross this barrier.
It Will be easy for cities to get involved in ALG because NLC is offering one month of service at no cost for member cities, and giving demonstrations in Tech City at the Congress of Cities in Phoenix on Thursday, November 30 and Friday, December 1.
Jim Nguyen, president of ALG said, 'Along with its balanced performance and handsome design, the Genesis G80 offers a generous list of standard features at a lower price point than that of similarly equipped luxury competitors.