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Specific in Biological Definition

Affinity chromatography

... 1 General Procedure 2 specific Uses 3 Batch verses column 4 Affinity ... or used simply for analytical purposes. specific Uses Affinity chromatography can be used in a ... If serum is known to contain antibodies against a specific antigen (for example if the serum comes from an ...

Antibody

... and viruses . Each antibody recognizes a specific antigen unique to its target. Contents ... B cells are activated upon binding to their specific antigen. In some cases the interaction of the B ... two variable domains bind the antigens they are specific for and that elicited their production. The ...

Brain

... then to regions of the cerebral cortex that are specific to each sensory system : the visual system , ... whether areas of the brain corresponded to specific functions or if the brain functioned as a whole ... helped show that areas of the brain had specific functions, though some functions were repeated, ...

Cancer

... sweating ( night sweats ), anemia , and specific paraneoplastic phenomena , i.e. specific conditions that are due to an active cancer, such ... digital rectal exam along with annual prostate specific antigen blood testing. Screening for cancer is ...

Chromatography

... vapors are a general unspecific color reagent. specific color reagents exist into which the TLC plate is ... way to purify proteins . It is based on the specific coordinate covalent binding between histidine ... non-covalent interaction between an analyte and specific molecules. It is very specific, but not very ...

Culture

... evolution to explain differences between specific cultures -- an approach that either was a form ... understood in terms of his or her culture; that a specific cultural artifact (e.g. a ritual) had to be ... and "civilization" Kulturkampf — a specific cultural fight in 1870s Germany Organizational ...

Morphogenesis

... Morphogens typically act through binding to specific protein receptors . An important class of ... with an embryo where they again activate specific cell adhesion proteins and form new tissues and ... to allow the localization of mRNA molecules to specific parts of the cell. Maternally synthesized bicoid ...

Enzyme

... must always be identical, independent of the specific individual pathway taken from beginning point to ... to form one product. Enzymes are usually specific as to the reactions they catalyze and the ... pathways Several enzymes can work together in a specific order, creating metabolic pathways . In a ...

Gene

... coding of a three nucleotide DNA sequence to a specific amino acid is essentially the same for all known ... RNA . Because the transcription starts from a specific base-pair sequence (a promoter ) and stops at ... of proteins, known as transcription factors , to specific non-coding DNA sequences called regulatory ...

Monoclonal antibody

... one uses only myeloma cells that have lost a specific enzyme ( hypoxanthine-guanine ... Each B-lymphocyte produces antibodies that are specific not to an antigen, but to an epitope of that ... antibodies that bind only to cancer cells specific antigen and induce an immunological response on ...

Morphogenesis

... Morphogens typically act through binding to specific protein receptors . An important class of ... with an embryo where they again activate specific cell adhesion proteins and form new tissues and ... to allow the localization of mRNA molecules to specific parts of the cell. Maternally synthesized bicoid ...

Neurospora crassa

... in metabolic pathways caused by errors in specific enzymes . This led to the "one gene, one enzyme" hypothesis that states that specific genes code for specific proteins . In the 24 April 2003 issue of ...

Neurotransmitter

... of action 3 Post-synaptic effect 4 specific actions 5 Common neurotransmitters 6 ... them hormones such as LH or insulin that have specific local actions in addition to their long-range ... removed from the cleft by diffusion. specific actions While some neurotransmitters ...

Polymerase chain reaction

... 4.6 Analysis of ancient DNA 4.7 Genotyping of specific mutations 4.8 Comparison of gene expression ... the experimenter to introduce a mutation at a specific location on the DNA strand. Usually, the desired ... of a Russian tsar . Genotyping of specific mutations Through the use of allele-specific ...

Proprioception

... in the joints and muscles (stance). There are specific nerve receptors for this form of perception, just like there are specific receptors for pressure, light/dark, temperature, ... become familiar with some proprioceptive concerns specific to that activity. Without the appropriate ...

Restriction enzyme

... long sequence. Furthermore, restriction enzymes specific to hundreds of distinct sequences have been ... enzyme complex. Although these enzymes recognize specific DNA sequences, the sites of actual cleavage are ... of its methylase, and cleavage occurs at very specific sites that are within or close to the recognition ...

Stem cell

... medicine , enabling doctors to repair specific tissues or to grow organs . Contents ... cells found among differentiated cells of a specific tissue and are mostly multipotent cells. They are ... of how mammalian stem cells differentiate to form specific types of brain cells. This could lead to new ...

T cell

... are able to destroy target cells which express specific antigens that they recognize. Helper T cells ... these cells by flow cytometry using specific antibodies against them. T cell activity and ... recognize only those antigens, for which they are specific and that are binded in a complex with the MHC ...

Virus

... of their host. Like most parasites, they have a specific host range, sometimes specific to one species (or even limited cell types of one ... viruses—attach to the cell wall surface in specific places. Once attached, enzymes make a small hole ...

Absorption spectrum

... as the opposite to an emission spectrum , which is a depiction of the specific wavelengths emitted by a material. Let us consider white light, which ... cold gas. For any collection of atoms or molecules , there are certain specific amounts of energy required to change state; for individual atoms, these ...

Antigen

... amino acids in a protein). Tolerogen - An antigen that invokes a specific immune unresponsiveness due to its molecular form . A tolerogen can become ... histocompatibility molecules to T helper cells (CD4 + ). Those that are specific for them, get activated, so they start to secrete cytokines . The ...

Biotechnology

... or derivatives thereof, to make or modify products or processes for specific use. One section of biotechnology is the directed use of organisms ... processes. An example would include an organism designed to grow under specific environmental conditions or in the presence (or absence) of certain ...

Bone

... generally smaller than a tuberosity Trochanter one of two specific tuberosities located on the femur Spine a relatively long, ... articulation between cranial bones. Malleolus one of two specific protuberances of bones in the ankle Condyle a large, rounded ...

Cladistics

... red in another). These features are collectively called characters, and specific versions are called character states. Thus we might say that "red ... selects the optimal cladogram that has the highest likelihood based on a specific probability model of changes. Cladistics has taken a while to settle in, ...

Developmental biology

... embryogenesis may shield information on how to specialize stem cells to specific tissues and organs, which could lead to the specific cloning of organs for medical purposes. Another biologically important ...

Diabetes mellitus

... normal glucose levels. Type 3 diabetes mellitus All other specific forms of diabetes, accounting for up to 5% of all diagnosed cases of ... on the market today, not every meter suits all patients and it is a specific matter of choice for the patient to find a meter that they personally find ...

DNA

... of how the segments of the chromosomes that were conceived to relate to specific traits could possibly do their jobs. Just how the presence of specific features in the molecular structure of chromosomes could produce traits ...

Ebola

... to convalescence occurs within six to ten days. Treatment No specific treatment has been proven effective, and no vaccine currently exists. A ... virus replication in lab tests. Prevention Although there is no specific treatment for patients with Ebola, there have been entire books written ...

Cell membrane

... lipophilic . Other molecules can pass in or out of the cell, if there are specific transport molecules. Depending on the molecule, transport occurs by ... which relies on a transport protein to provide a channel or bind to specific molecules. This spontaneous process decreases free energy, and increases ...

Genetic fingerprinting

... treated with a radioactively-labelled DNA probe which binds to certain and specific DNA sequences on the membrane. The excess DNA probe is washed off. An ... of polymerase chain reaction (PCR). PCR involves the amplification of specific regions of DNA that are known to be highly variable from one individual to ...

Helper T cell

... of cells, Th1 and Th2 cells. These subtypes are defined on the basis of specific cytokines produced. Th1 cells produce interferon-gamma and interleukin ... , interleukin-5 and interleukin-13. Memory T H cells are specific to the antigen they first encountered and can be called upon during the ...

Immunology

... system are actually cellular in nature and not associated with any specific organ, but imbedded or circulating in various tissues located about the ... detection of substances in a variety of diagnostic techniques. Antibodies specific for a desired antigen can be conjugated with a radiolabel, fluorescent ...

Ion channel

... pore is just one or two atoms wide at its narrowest point, it conducts a specific species of ion, such as sodium or potassium , and conveys them through ... pre-synaptic endings . Ligand-gated channels open in response to a specific ligand molecule on the external face of the membrane in which the channel ...

Lac repressor

... entrances and exits. The enzyme RNA polymerase is like a car . For a specific protein sequence to be made, the car must drive from a specific entrance and get off at the next exit. The repressor in its active form is ...

Long-term potentiation

... and memory. Similarly, Susumu Tonegawa has demonstrated that a specific region of the hippocampus, namely CA1, is crucial to the formation of ... in the CA1 region, the place fields generated were substantially less specific than those of controls. That is, rats produced faulty spatial maps when ...

Memory

... independent of context; and episodic memory , which concerns information specific to a particular context, such as a time and place. Semantic memory allows ... to describe memory, and its counterpart learning, as soley dependant on specific brain regions. Learning and memory are attributed to changes in neuronal ...

Molecular biology

... genetics and molecular biology Researchers in molecular biology use specific techniques native to molecular biology (see Techniques section later in ... now be expressed. A variety of systems, such as inducible promoters and specific cell-signaling factors, are available to help express the protein of ...

Natural selection

... a process called "individuation" by Darwin. This theory does not make any specific claims as to how this process works, although more recent scientific ... will also tend to supplant its competitors even though it provides no specific advantage in the near term. Descendants of that organism will be more ...

Nutrition

... as well as the chemical content of the food and the waste. The specific types of matter (chemicals) that are absorbed by the body can be ... animal-based foods. If these wider areas of advice are followed, then specific traditional nutritional intervention may only be needed for individual ...

Phage

... and development in Stalin 's Soviet Union . Phages infect only specific bacteria. Some phages are virulent , meaning that upon infecting a cell ... is what phages do best. There is an extensive library of research into specific phages and their therapeutic uses in the Tbilisi Institute in Georgia . ...
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(Date:11/23/2009)... The community-associated strain of the deadly su... to most common antibioticsposes a far greater hea... way into hospitals, according to a study in the D..., The new threat is easily picked up in fitness ...increased the overall burden of MRSA within hospit...
(Date:11/23/2009)...Current research suggests that a common oral bacte...ed report by Nichols et al, "Unique Lipids from a ...R2 Ligands Capable of Enhancing Autoimmunity," app...ournal of Pathology . , Multiple sclerosis (MS),...in and spinal cord, affects nearly 1 in 700 people...
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