Additional pages

lac represory

Bacterial repressor proteins that bind to the LAC OPERON and thereby prevent the synthesis of proteins involved in catabolism of LACTOSE. When lactose levels are high lac repressors undergo an allosteric change that causes their release from the DNA and the resumption of lac operon transcription.
MSH

Price: $1.00

Loading Updating cart…

slzné ústrojí

The tear-forming and tear-conducting system which includes the lacrimal glands, eyelid margins, conjunctival sac, and the tear drainage system.
MSH

almond-shaped structure that produces tears; located at the upper outer region of the orbit, above the eyeball.
CSP

Price: $1.00

Loading Updating cart…

slzné ústrojí – nemoci

Diseases of the lacrimal apparatus.
MSH

pathologic condition of the almond-shaped structure that produces tears or lacrimal gland; located at the upper outer region of the orbit, above the eyeball.
CSP

Price: $1.00

Loading Updating cart…

slzovod – obstrukce

Interference with the secretion of tears by the lacrimal glands. Obstruction of the lacrimal sac or nasolacrimal duct causing acute or chronic inflammation of the lacrimal sac (DACRYOCYSTITIS). It is caused also in infants by failure of the nasolacrimal duct to open into the inferior meatus and occurs about the third week of life. In adults occlusion may occur spontaneously or after injury or nasal disease. (Newell, Ophthalmology: Principles and Concepts, 7th ed, p250)
MSH

Price: $1.00

Loading Updating cart…

Traanklieren

Lobular organ the parenchyma of which consists of glandular acini which communicate the lacrimal sac. Examples: There only two instances, right lacrimal and left lacrimal glands.
FMA

A gland that secretes tears. The lacrimal glands are found in the upper, outer part of each eye socket.
NCI

Paired, almond-shaped exocrine glands situated superior and posterior to each orbit of the eye that produce and secrete the watery serous component of tears.
NCI

Price: $1.00

Loading Updating cart…

laktalbumin

albumin found in milk.
CSP

Price: $1.00

Loading Updating cart…

laktamy

Cyclic AMIDES formed from aminocarboxylic acids by the elimination of water. Lactims are the enol forms of lactams.
MSH

cyclic amides formed from aminocarboxylic acids by the elimination of water.
CSP

Price: $1.00

Loading Updating cart…

L-laktátdehydrogenasa

do not confuse with EC 1.1.2.3, EC 1.1.2.4, or EC 1.1.2.5, lactate dehydrogenase (cytochrome).
CSP

One of a group of enzymes found in the blood and other body tissues and involved in energy production in cells. An increased amount of lactate dehydrogenase in the blood may be a sign of tissue damage and some types of cancer or other diseases.
NCI

A tetrameric enzyme that, along with the coenzyme NAD+, catalyzes the interconversion of LACTATE and PYRUVATE. In vertebrates, genes for three different subunits (LDH-A, LDH-B and LDH-C) exist.
MSH

A family of homotetrameric cytoplasmic enzymes involved in the conversion of L-lactate and NAD to pyruvate and NADH in the final step of anaerobic glycolysis. In vertebrates, genes for three different subunits (LDH-A, LDH-B and LDH-C) exist.
NCI

Price: $1.00

Loading Updating cart…

virus LDH

A species ARTERIVIRUS, occurring in a number of transplantable mouse tumors. Infected mice have permanently elevated serum levels of lactate dehydrogenase.
MSH

Price: $1.00

Loading Updating cart…

laktáty

Salts or esters of LACTIC ACID containing the general formula CH3CHOHCOOR.
MSH

metabolic intermediate involved in many biochemical processes; the end product of glycolysis, which provides energy anaerobically in skeletal muscle during heavy exercise; can be oxidized aerobically in the heart for energy production or can be converted back to glucose in the liver; also the end product of fermentation in several bacterial species.
CSP

name of an organic chemical
CHV

Price: $1.00

Loading Updating cart…

laktace

The processes of milk secretion by the maternal MAMMARY GLANDS after PARTURITION. The proliferation of the mammary glandular tissue, milk synthesis, and milk expulsion or let down are regulated by the interactions of several hormones including ESTRADIOL; PROGESTERONE; PROLACTIN; and OXYTOCIN.
MSH

production and secretion of milk by the mammary glands.
CSP

The secretion of milk by the mammary gland. [ISBN:0198506732 “Oxford Dictionary of Biochemistry and Molecular Biology”]
GO

production and secretion of milk from milk producing cell
CHV

Price: $1.00

Loading Updating cart…

laktace – poruchy

Disturbances of MILK secretion in either SEX, not necessarily related to PREGNANCY.
MSH

A disorder not necessarily related to pregnancy that is observed in females and males. It is characterized by disturbances of milk secretion. Causes include damage to the breast parenchyma due to inflammation, medications, pituitary tumors, and hypothyroidism.
NCI

A disorder characterized by disturbances of milk secretion. It is not necessarily related to pregnancy that is observed in females and can be observed in males.
NCI

Price: $1.00

Loading Updating cart…

Lactobacillaceae

family of gram positive bacteria found regularly in the mouth and intestinal tract of man and other animals, in food and dairy products, and in fermenting vegetable juices; a few species are highly pathogenic.
CSP

A family of gram-positive bacteria found regularly in the mouth and intestinal tract of man and other animals, in food and dairy products, and in fermenting vegetable juices. A few species are highly pathogenic.
MSH

A taxonomic family of bacterium that ferment carbohydrates into lactic acid, in the phylum Firmicutes that includes the genera Lactobacillus and Pediococcus, among others.
NCI

Price: $1.00

Loading Updating cart…

Lactobacillus

genus of gram positive, microaerophilic, rod shaped bacteria occurring widely in nature; its species are also part of the many normal flora of the mouth, intestinal tract, and vagina of many mammals, including humans.
CSP

A genus of gram-positive, microaerophilic, rod-shaped bacteria occurring widely in nature. Its species are also part of the many normal flora of the mouth, intestinal tract, and vagina of many mammals, including humans. Pathogenicity from this genus is rare.
MSH

A genus of Gram-positive facultative anaerobic or microaerophilic bacteria in the phylum Firmicutes.
NCI

Any bacteria that is not assigned to the species level but can be assigned to the Lactobacillus genus level.
NCI

A type of bacterium that makes lactic acid (a substance that is made from sugars found in milk and is also made in the body). Lactobacilli usually do not cause disease, but may cause tooth decay. They are normally found in the mouth, gastrointestinal tract, and vagina. They are being studied in the prevention of infections in patients having donor stem cell transplants and in other conditions.
NCI

Price: $1.00

Loading Updating cart…

Lactobacillus acidophilus

A species of gram-positive, rod-shaped bacteria isolated from the intestinal tract of humans and animals, the human mouth, and vagina. This organism produces the fermented product, acidophilus milk.
MSH

Any bacterial organism that can be assigned to the species Lactobacillus acidophilus.
NCI

A species of facultatively anaerobic, Gram positive, rod shaped bacteria in the phylum Firmicutes. This species is nonmotile, homofermentative, indole negative, produces vitamin K, lactase and amylase and does not ferment mannitol. L. acidophilus is a commensal organism of the gastrointestinal tract, mouth and vagina with probiotic activity.
NCI

Price: $1.00

Loading Updating cart…

Lactobacillus casei

rod shaped bacterium isolated from milk and cheese, dairy products and dairy environments, sour dough, cow dung, silage, and human mouth, human intestinal contents and stools, and the human vagina.
CSP

A rod-shaped bacterium isolated from milk and cheese, dairy products and dairy environments, sour dough, cow dung, silage, and human mouth, human intestinal contents and stools, and the human vagina.
MSH

A species of facultatively anaerobic, Gram positive, rod shaped bacteria in the phylum Firmicutes. This species is nonmotile, heterofermentative, amylase positive and ferments mannitol. L. casei is non pathogenic and a commensal organism of the mouth and digestive tract.
NCI

Any bacterial organism that can be assigned to the species Lactobacillus casei.
NCI

Price: $1.00

Loading Updating cart…

laktoferrin

An iron-binding protein that was originally characterized as a milk protein. It is widely distributed in secretory fluids and is found in the neutrophilic granules of LEUKOCYTES. The N-terminal part of lactoferrin possesses a serine protease which functions to inactivate the type III secretion system used by bacteria to export virulence proteins for host cell invasion.
MSH

iron binding protein found in the specific granules of neutrophils where it exerts an antimicrobial activity by withholding iron from ingested bacteria and fungi; occurs in many excretions and exudates.
CSP

Lactotransferrin (710 aa, ~78 kDa) is encoded by the human LTF gene. This protein is involved in the mediation of both proteolysis and iron transport.
NCI

A protein that is found in milk, tears, mucus, bile, and some white blood cells and is being studied in the treatment and prevention of cancer. It is involved in fighting against infection and inflammation and it acts as an antioxidant.
NCI

Price: $1.00

Loading Updating cart…

laktoglobuliny

Globulins occurring in milk. (From Dorland, 28th ed)
MSH

Price: $1.00

Loading Updating cart…

laktony

Cyclic esters of hydroxy carboxylic acids, containing a 1-oxacycloalkan-2-one structure. Large cyclic lactones of over a dozen atoms are MACROLIDES.
MSH

cyclic organic compound in which the chain is closed by ester formation between a carboxyl and a hydroxyl group in the same molecule.
CSP

Cyclic esters of hydroxy carboxylic acids, containing a 1-oxacycloalkan-2-one structure, or analogues having unsaturation or heteroatoms replacing one or more carbon atoms of the ring (IUPAC).
NCI

Price: $1.00

Loading Updating cart…

laktoperoxidasa

An enzyme derived from cow`s milk. It catalyzes the radioiodination of tyrosine and its derivatives and of peptides containing tyrosine.
MSH

nonEC.
CSP

Price: $1.00

Loading Updating cart…

laktosa

A disaccharide of GLUCOSE and GALACTOSE in human and cow milk. It is used in pharmacy for tablets, in medicine as a nutrient, and in industry.
MSH

sugar comprising one glucose molecule linked to a galactose molecule; occurs only in milk.
CSP

A type of sugar found in milk and milk products.
NCI

A disaccharide consisting of a galactose linked by a beta-1,4 glycosidic bond to a glucose.
NCI

Price: $1.00

Loading Updating cart…

laktosové faktory

Plasmids which determine the ability of a bacterium to ferment lactose.
MSH

Price: $1.00

Loading Updating cart…

laktosa – nesnášenlivost

The condition resulting from the absence or deficiency of LACTASE in the MUCOSA cells of the GASTROINTESTINAL TRACT, and the inability to break down LACTOSE in milk for ABSORPTION. Bacterial fermentation of the unabsorbed lactose leads to symptoms that range from a mild indigestion (DYSPEPSIA) to severe DIARRHEA. Lactose intolerance may be an inborn error or acquired.
MSH

The inability to digest or absorb lactose, a type of sugar found in milk and other dairy products.
NCI

Lactose intolerance means that you cannot digest foods with lactose in them. Lactose is the sugar found in milk and foods made with milk. After eating foods with lactose in them, you may feel sick to your stomach. You may also have

  • Gas
  • Diarrhea
  • Swelling in your stomach

Your doctor may do a blood, breath or stool test to find out if your problems are due to lactose intolerance.

Lactose intolerance is not serious. Eating less food with lactose, or using pills or drops to help you digest lactose usually helps. You may need to take a calcium supplement if you don`t get enough of it from your diet, since milk and foods made with milk are the most common source of calcium for most people.

NIH: National Institute of Diabetes and Digestive and Kidney Diseases


MEDLINEPLUS

Price: $1.00

Loading Updating cart…

laktosasynthasa

An enzyme of the transferase class that catalyzes the transfer of galactose from UDPgalactose to glucose, forming lactose. The enzyme is a complex of the enzyme N-ACETYLLACTOSAMINE SYNTHASE and alpha-lactalbumin; the latter protein is present in lactating mammary gland cells where it alters the usual specificity of the former to make lactose synthesis the preferred reaction. (Dorland, 28th ed) EC 2.4.1.22.
MSH

Price: $1.00

Loading Updating cart…

laktosylceramidy

Glycosphingolipids which contain as their polar head group a lactose moiety bound in glycosidic linkage to the hydroxyl group of ceramide. Their accumulation in tissue, due to a defect in lactosylceramide beta-galactosidase, is the cause of lactosylceramidosis.
MSH

Price: $1.00

Loading Updating cart…

laktoylglutathionlyasa

An enzyme that catalyzes the interconversion of methylglyoxal and lactate, with glutathione serving as a coenzyme. EC 4.4.1.5.
MSH

Price: $1.00

Loading Updating cart…

laktulosa

A synthetic disaccharide used in the treatment of constipation and hepatic encephalopathy. It has also been used in the diagnosis of gastrointestinal disorders. (From Martindale, The Extra Pharmacopoeia, 30th ed, p887)
MSH

A disaccharide (sugar) synthesized from fructose and galactose, Lactulose is used to treat constipation and some liver diseases. Nondigestible in mammals, lactulose passes unabsorbed down to the large intestine where resident bacteria consume it and produce lactic, acetic, and formic acids, which draw fluid into the bowel to soften the stool (laxative effect). Acidification of the colon contents attracts ammonia from the bloodstream, assisting stool excretion; helpful in liver failure when ammonia cannot be detoxified. (NCI04)
NCI

Price: $1.00

Loading Updating cart…

LacZ-genen

The lacZ gene is a popular reporter gene in transfection experiments because its product, b-galactosidase, is very stable, resistant to proteolytic degradation, and easily assayed.
NCI

Price: $1.00

Loading Updating cart…

Lagomorpha

order of herbivorous mammals (class Eutheria) resembling rodents (order Rodentia) but having two pairs of upper incisors one behind the other; it includes the rabbits, hares, and pikas.
CSP

An order of small mammals comprising two families, Ochotonidae (pikas) and Leporidae (RABBITS and HARES). Head and body length ranges from about 125 mm to 750 mm. Hares and rabbits have a short tail, and the pikas lack a tail. Rabbits are born furless and with both eyes and ears closed. HARES are born fully haired with eyes and ears open. All are vegetarians. (From Nowak, Walker`s Mammals of the World, 5th ed, p539-41)
MSH

The taxonomic order of mammals which include hares, rabbits and pikas.
NCI

Price: $1.00

Loading Updating cart…

Lambertův-Eatonův myastenický syndrom

An autoimmune disease characterized by weakness and fatigability of proximal muscles, particularly of the pelvic girdle, lower extremities, trunk, and shoulder girdle. There is relative sparing of extraocular and bulbar muscles. CARCINOMA, SMALL CELL of the lung is a frequently associated condition, although other malignancies and autoimmune diseases may be associated. Muscular weakness results from impaired impulse transmission at the NEUROMUSCULAR JUNCTION. Presynaptic calcium channel dysfunction leads to a reduced amount of acetylcholine being released in response to stimulation of the nerve. (From Adams et al., Principles of Neurology, 6th ed, pp 1471)
MSH

A rare autoimmune presynaptic disorder characterized by impairment of the impulse transmission at the neuromuscular junction. It affects predominantly the proximal muscles of the lower extremities, resulting in muscle weakness and fatigability. It has been associated with small cell lung carcinoma.
NCI

Price: $1.00

Loading Updating cart…