Long

Long-term potentiation (LTP) is the persistent increase in synaptic strength following high-frequency stimulation of a chemical synapse.

Long bone One of the elongated bones of the extremities, consisting of a tubular shaft (diaphysis) and two extremities (epiphyses) usually wider than the shaft; the shaft is composed of compact bone surrounding a central medullary cavity.

Long-Term Potentiation (LTP) Demonstrating LTP Early LTP vs. Late LTP Summary Long-Term Depression (LTD) ...

Long-term potentiation In neuroscience, long-term potentiation (LTP) is the strengthening (or potentiation) of the connection between two nerve cells which lasts for an extended period of time (minutes to hours in vitro and hours to days and months ...

Long before there was a formal Human Genome Project (HGP), the Department of Energy (DOE) and its predecessor agencies had been interested in developing sensitive methods to detect changes to genetic materials induced by ionizing radiation and to ...

Long term or frequently recurring. A chronic disease is either always present or comes back again and again. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...

Long nerve fibres from the medulla or elsewhere which are cut at the axon somewhere in cord injury, thus depriving the proximal end of input from the periphery, leading to spontaneous firing without logical input. Another name for Central Pain.

Long chains of carbon atoms are common. The chains may be branched or form rings. Hydrophilic and Hydrophobic ...

Long(q) and short(p) arms: The regions either side of the centromere, a compact part of a chromosome, are known as arms. As the centromere is not in the centre of the chromosome, one arm is longer than the other. LTR (Long Terminal Repeat): ...

long-day plants Plants that þower in the summer when nights are short and days are long; e.g., spinach and wheat. loop of Henle A U-shaped loop between the proximal and distal tubules in the kidney.

long-day plant A plant that flowers, usually in late spring or early summer, only when the light period is longer than a critical length. loop of Henle ...

Long-Term Potentiation In LTP, neurons continue to fire at an elevated rate, even though the stimulus has returned to normal. View QuickTime Movie ...

long interspersed nuclear elements See LINEs. long template A DNA strand that is synthesized during the polymerase chain reaction and has a primer sequence at one end but is extended beyond the site that is complementary to the second primer at the ...

long-day plant A plant that flowers when the length of day exceeds some critical value. longevity The length or duration of life; compare to survivorship.

Long-Range Restriction Mapping Restriction enzymes are proteins that cut DNA at precise locations. Restriction maps depict the chromosomal positions of restriction-enzyme cutting sites.

A long, continuous piece of linear DNA in cells. Related Chromatid Chromatin ...

A long DNA sequence that is unin- terrupted by a stop codon and encodes part or all of a protein. (See Reading frame.) Operator. Full article ...

the long arm of a chromosome Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...

n One Long Argument, Ernst Mayr (evolutionary biologist, and originator of the Biological Species Concept) summarizes Darwin's theories, and traces the history of their acceptance by the world scientific community. In the Preface , he begins: ...

Not so long ago there were only two kingdoms: Plants and Animals. By 1965, the kingdom Protista was established for those organisms that do not resemble our typical "plants" and "animals" or have characteristics of both.

axon - long nerve cell processes that is capable of rapidly conducting nerve impulses over long distances so as to deliver signals to other cells ...

Flagella Long, flexible, helical protein structures that extend from the surface of the cell. Rotation of flagella in one direction results in motility, and rotation of flagella in the opposite direction results in tumbling.

stolon A long slender stem running along the surface of the ground, arising from the axil of a leaf, whose function is to enable rapid vegetative propagation in an area. Runners are found, for example, in strawberries and creeping buttercup.

filament -- Long chain of proteins, such as found in hair, muscle, or in flagella. fission -- Division of single-celled organisms, especially prokaryotes, in which mitosis does not occur. Also used to refer to mitosis in certain unicellular fungi.

Definition: Long, stringy aggregate of genes that carry heredity information and are formed from condensed chromatin.

Hibernation a long-term (seasonal) decrease in body functions (hibern = winter) ...

A long chain of amino acids joined by peptide bonds. Cf. peptide. Related Terms: Amino acid Any of a class of 20 molecules that are combined to form proteins in living things.

Evolution. The long-term process through which a population of organisms accumulats genetic changes that enable its members to successfully adapt to environmental conditions and to better exploit food resources.

Parasite: A plant without chlorophyll that obtains its nutrients by tapping into the branches, stems or roots of living green plants Perennial: a plant that lives more than two years Phreatophyte: A desert shrub with a long trap root that enables ...

Structure fatty acid A long-chain aliphatic carboxylic acid found in fats, oils, membrane phospholipids and glycolipids.

The polymers get very, very long, and they stretch the cell out of shape. Now your spleen is very good at raking these cells out of the peripheral blood as they come through.

Based on radioligand binding studies, it has long been assumed that the neurochemical pathology of Alzheimer's disease (AD) does not involve widespread changes in post-synaptic neurotransmitter function.

In the long list of citations to technical origins of the human genome project, some items have been patented and others not.

A pest management strategy that focuses on long-term prevention or suppression of pest problems through a combination of techniques such as encouraging biological control, use of resistant varieties, ...

Interrupted genes: Genes whose coding sequence is interrupted at intervals by long stretches of non-coding sequences. The coding regions came to be known as exons and the non-coding regions as introns.

These may be short repeats just a few nt long, like CACACA etc. They can also range up to a few hundred nt long. Examples of the latter include Alu repeats, LINEs, SINEs. The function of these elements is often unknown.

Centric fusion: Fusion of the long arms of two acrocentric chromosomes [13,14,15,21,22] into a single chromosome having lost the short arms at the same time. Most often occurs as 21/21, 13/14, and 14/21 translocations.

Oligonucleotide A short nucleic acid molecule; normally refers to molecules between 5 and 200 nucleotide residues(bases) long.

Highly pleiomorphic organelle of eukaryotic cells that varies from short rod-like structures present in high number to long branched structures. Contains DNA and mitoribosomes.

DNA (deoxyribonucleic acid): The long, spiralling m olecule that rchestrates the cell's daily operations and provides the genetic blueprint for the physical characteristics of all living organisms.

A microscopy technique that uses simultaneous absorption of two or more photons of a long wavelength to excite fluorophores that are normally excited by a single photon of shorter wavelength.

Within their characteristic long terminal repeats (LTRs), some retrotransposons encode retroviral-like proteins (e.g., gag, pol) for reverse transcriptase and integrase.

For example 2 gene loci that map to the distal and proximal locations on the long arm of chromosome 1 respectively would not be linked but would exhibit synteny. Alos called genome collinearity. Related Terms: Locus ...

- A biological molecule composed of a long chain of nucleotides. DNA is made of thousands of four different nucleotides repeated randomly. Nucleolus - A nuclear organelle of eukaryotes, associated with the chromosomal site of genes coding for rRNA ...

The structural arrangement of DNA, which looks something like an immensely long ladder twisted into a helix, or coil.

Teleplanic larva. Larva capable of dispersal over long distances, such as across oceans Temperate. Pertaining to the latitudinal belt between 23º 27' and 66º 33' north or south latitude ...

The polymorphism may be anything to do with the DNA at the locus or its possible product so long as it can be recognised with an appropriate test.

"You may do anything in the classroom as long as it doesn't interfere with anyone's learning-including you own!" CLASS REQUIREMENTS ...

See also: Human, Trans, Organ, DNA, Order