
1) Cause of some intolerance 2) Component of milk products 3) Disaccharide 4) French word used in English 5) Intolerable compound for some 6) Introduce law to reduce sugar 7) Like milk in a closet 8) Many are intolerant of it 9) Medicinal ingredient 10) Milk sugar 11) Occurs only in milk 12) Source of intolerance
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1) Sugar
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https://www.crosswordclues.com/clue/lactose

A nonfermentable sugar, lactose comes from milk and has historically been added to Stout, hence Milk Stout.
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http://howtobrew.com/book/glossary

• (n.) Sugar of milk or milk sugar; a crystalline sugar present in milk, and separable from the whey by evaporation and crystallization. It has a slightly sweet taste, is dextrorotary, and is much less soluble in water than either cane sugar or glucose. Formerly called lactin. • (n.) See Galactose.
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http://thinkexist.com/dictionary/meaning/lactose/

Lactose is commonly termed ‘milk sugar`. It is the carbohydrate found in all mammalian milks ( cow, sheep, goat ), including breast milk.
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http://www.brainandbody.co.uk/index.php?Itemid=3&id=13&option=com_content&t

carbohydrate containing one molecule of glucose and one of galactose linked together. Composing about 2 to 8 percent of the milk of all mammals, ... [13 related articles]
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http://www.britannica.com/eb/a-z/l/4

A type of sugar found in milk and milk products.
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http://www.cancer.gov/dictionary?expand=L

A milk sugar that many cats find difficult to digest. Giving cats cow's milk, especially in large quantities, may cause diarrhoea because of this
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http://www.cats.org.uk/cat-glossary/

C12H22O11 Molar mass: 342.29648
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http://www.convertunits.com/molarmass/Lactose

A dissaccharide (12-carbon) sugar that occurs in mammalian milk. It consists of a molecule of glucose and one of galactose joined by a glycosidic bond and is broken down into these simple sugars by the action of the intestinal enzyme lactase. Human milk contains about 6.7% lactose; cows' milk about ...
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http://www.daviddarling.info/encyclopedia/L/lactose.html

(lak´tōs) a sugar derived from the milk of mammals, which on hydrolysis yields glucose and galactose; used as a tablet and capsule diluent, a powder bulking agent, and as a component of infant feeding formulas. Many persons are intolerant to lactose as a result of hereditary deficiency of lactase.
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http://www.encyclo.co.uk/local/21001

Milk sugar
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(= 4-O-b-D galactopyranosyl-b-D glucose) The major sugar in human and bovine milk. Conversion of lactose to lactic acid by Lactobacilli etc. is important in the production of yoghurt and cheese.
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Milk sugar; also white crystal sugar made from whey used in baby food, baked goods, candies and pharmaceuticals.
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http://www.encyclo.co.uk/visitor-contributions.php
Lac'tose` noun 1. (Physiol. Chem.) Sugar of milk or milk sugar; a crystalline sugar present in milk, and separable from the whey by evaporation and crystallization. It has a slightly sweet taste, is dextrorotary, and is much less soluble in water than either cane sugar or glucose. Formerly ...
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http://www.encyclo.co.uk/webster/L/4

A nonfermentable sugar, lactose comes from milk and has historically been added to Stout, hence Milk Stout.
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http://www.howtobrew.com/glossary.html

A special type of sugar found in milk.
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http://www.ibs-relief.co.uk/glossary.html

Lactose: The sugar found in milk. The body uses the enzyme lactase to break down lactose into galactose and glucose.
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http://www.medterms.com/script/main/art.asp?articlekey=25973

(lak;tos) Milk sugar; a disaccharide of glucose and galactose.
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http://www.mhhe.com/biosci/abio/glossary.mhtml

Lactose (lactine or milk-sugar) is a sugar found in solution in milk isomeric with cane-sugar. It is the combination of glucose and galactose. Lactose is obtained by evaporating whey, filtering through animal charcoal, and crystallizing. It forms hard, white, semi-transparent crystals, which have a slightly sweet taste, and grate between the teeth....
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http://www.probertencyclopaedia.com/browse/GL.HTM

Milk sugar.
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http://www.thehorse.com/Glossary.xhtml?L=L

a disacchararide characteristic of milk. It is not very sweet. In humans, it requires a special enzyme to disassemble it during digestion. Most of the species loses this enzyme in adulthood and milk consumed by those deficient in lactase (the enzyme) encounter problems when it becomes available to intestinal bacteria. Some populations do retain the...
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A sugar found in milk and used in some baby foods.
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http://www.vidyagyaan.com/general-knowledge/basic-chemistry-element-terms-a

lactose 1. A sugar found in milk that breaks down into glucose and galactose and creates lactic acid through fermentation. 2. A white crystalline form of lactose extracted from whey and used commercially in food products and pharmaceuticals.
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http://www.wordinfo.info/words/index/info/view_unit/1136/2

The main carbohydrate in milk (milk sugar).
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https://www.encyclo.co.uk/local/21800
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