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7-20-8

(1907), a “comedy of to‐day” by Augustin Daly. [Daly's Theatre, 49 perf.] Portrait of a Lady, picture #728 at the annual Academy exhibition, so lovingly depicts a beautiful woman ...

Tris

Tris  

orortris(hydroxymethyl)aminomethane; 2‐amino‐2‐hydroxymethyl‐1,3‐propanediol; a compound widely used as a biological buffer substance in the pH range 7–9; pKa (20 °C) = 8.3; pKa (37 °C) = 7.82.
arabinose

arabinose  

A pentose sugar found in plant polysaccharides. It is an epimer of ribose and is found in cytosine arabinoside.
barbital

barbital  

or5,5‐diethylbarbituric acid; 5‐diethylmalonylurea; 5,5‐diethyl‐2,4,6(1H,3H,5H)‐pyrimidinetrione; a long‐acting depressant of the central nervous system, widely used as a buffer substance; pKa = 7.98 ...
isoagglutinin

isoagglutinin  

(isohaemagglutinin) n. one of the antibodies occurring naturally in the plasma that cause agglutination of red blood cells of a different group.
ribonuclease

ribonuclease  

An enzyme that catalyses the hydrolysis of RNA, resulting in the formation of mono- and oligonucleotides.
immunogen

immunogen  

A substance that causes an immune response. Foreign proteins and glycoproteins generally make the most potent immunogens. See antigen.
euchromatin

euchromatin  

n. chromosome material (see chromatin) that stains most deeply during mitosis and represents the major genes. Compare heterochromatin.
nucleoid

nucleoid  

The part of a cell of a bacterium (i.e. a prokaryotic cell) that contains the genetic material DNA and therefore controls the activity of the cell. It corresponds to the nucleus of the more advanced ...
turnover number

turnover number  

A measure of enzyme activity, normally expressed as the number of moles of substrate transformed into one or more products per mole of enzyme.
ketose

ketose  

A monosaccharide or its derivative that contains a ketone group.
aldose

aldose  

A monosaccharide in which the (potential) carbonyl group is terminal (i.e. aldehydic). The term is frequently modified to indicate the number of carbon atoms in the chain, as in aldotriose, ...
Cerenkov counter

Cerenkov counter  

A device for detecting high-energy charged particles via the Cerenkov radiation they generate. This radiation, which appears as a predominantly bluish light, can be detected using photomultiplier ...
precipitate

precipitate  

A suspension of small solid particles produced in a liquid by chemical reaction.
opioid receptor

opioid receptor  

A receptor on one of the neurons responsible for feelings of pain and pleasure that binds to opioids.
uridine

uridine  

A nucleoside consisting of one uracil molecule linked to a dribose sugar molecule. The derived mucleotide uridine diphosphate (UDP) is important in carbohydrate metabolism.Uridine
sucrase

sucrase  

A carbohydrate-digesting enzyme, produced in the brush border of the small intestine, that breaks down the disaccharide sucrose into the monosaccharides glucose and fructose.
poliovirus

poliovirus  

The cause of poliomyelitis (infantile paralysis). It is a positive-stranded RNA virus with a 6.1 kb genome. Enormous polysomes (q.v.) containing 60 or more ribosomes occur in infected cells. The ...
quinone

quinone  

Any of various compounds derived from benzene and containing C=O groups in an unsaturated ring. An example is plastoquinone.
serine

serine  

An aliphatic, polar (see polar molecule) alpha-amino acid. It is often associated with the active site of an enzyme.
cytochrome

cytochrome  

One of a group of haemoproteins, which are classified into four groups designated a, b, c, and d. They function as electron carriers in a variety of redox reactions in virtually all aerobic organisms.

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