What does specificity mean and what does it mean?

Antibodies are specific. There are many epitopes on the surface of antigens, also known as epitopes. Each epitope binds to one antibody, so an antigen can bind multiple antibodies at the same time, but an antibody binds only one antigen.

In the vernacular, it is a key to a lock, which is specificity. Antibodies can only recognize a specific antigen, which is the specificity of antibodies.

To put it simply: antibodies are proteins, and each protein has a specific structure, in other words, an antibody can only bind to one corresponding antigen, which is specific.

Specificity refers to the purpose of scientific anti-cancer by cultivating the patient's own anti-cancer cells in vitro and then infusing them back into the patient's body. Specific and unique ** mode, what cells are missing in the patient's body, what cells are cultured, more targeted.

With the help of biological agents, it is cultivated and injected into the human body, and the most efficient specific immune cells DC, CIK, T and NK cells in the human body work together to mobilize the defense mechanism of the patient's body, so as to regulate the biological response of the patient's body, kill cancer cells, activate immune cells, and kill the remaining tiny cancer cells in the body, so as to achieve the purpose of starting the tumor from the root.

Reference encyclopedia. 1.Paired, groups of objects must correspond to each other. For example, a key and a lock, the existence of a key has a specific corresponding lock.

For example, the mutual discrimination and selective binding reaction between enzyme-substrate, antigen-antibody, and ligand-receptor is the conformational correspondence between the corresponding reactants from the perspective of stereostructure. Enzyme specificity refers to the ability of an enzyme to distinguish between two or more different substrates, and bind to one of the most conformationally appropriate substrates to catalyze the chemical reaction of the substrate, showing that the enzyme has strict selectivity for its substrate. This phenomenon can be explained by the theory of induced wedges, that is, when the enzyme is close to the substrate, the enzyme protein is allosterized, and on this basis, the enzyme and the substrate complement the wedge to carry out the reaction.

X-ray diffraction analysis showed that the enzyme had a significant conformational change when binding to the substrate.

2.The numerical size of a certain index nature that distinguishes the observed object from its ** group.

Plant variety specificity: It means that the new plant variety for which the variety right is applied should be clearly distinguished from the plant variety known before the application was submitted.

DNA Match Specificity: Refers to the obvious difference between the DNA to be tested and the comparator.

The second point of the meaning is proposed based on the explanation of sensitivity and specificity (medical statistics).

In the medical system, any diagnostic index has two most basic characteristics, namely sensitivity and specificity, the so-called sensitivity refers to the probability of not missing the diagnosis (false negative) when diagnosing the disease, and the so-called specificity refers to the probability of the index not being misdiagnosed (false positive) when diagnosing a disease.

Generally speaking, it is the comparison of four items of data that can explain the problem.

1) Sensitivity, i.e., the percentage of patients with a positive test out of the total number of patients; For example, in patients with colds, the proportion of white blood cell counts high in the blood routine;

2) specificity, i.e., the percentage of healthy people who have a negative test out of the total number of healthy people;

3) Positive ** value, i.e., the percentage of patient samples in the total number of positive samples in the total number of positive samples tested;

4) Negative ** value, that is, the percentage of normal people in the total number of negative test samples in the total number of negative test samples.

Healthy people mentioned in specificity are relative, referring to people who have not observed the disease, for example, when studying the specificity of tumor markers for gastric cancer, gastric ulcer patients are also healthy people. Your detection criteria may not be able to produce a completely negative result in the gastric ulcer group, and if you do not get a completely negative result, this set of data illustrates the probability of misdiagnosis in a normal person.

Specificity. It is a descriptive term that is more common in biology or laboratory medicine. Specificity is, to put it bluntly, a one-to-one match.

For example, if an antigen binds specifically to an antibody, one type of antigen can only bind to one type of antibody, and one key is equipped with a lock, and the others cannot be combined.

High specificity means that the opposite sex is a relatively large time, looking for some of his friends of the opposite sex, fate is still better.

The specificity of an antibody refers to the substance that recognizes a similar antigen or a specific antigen. The higher the specificity of the antibody, the stronger its antibody recognition ability, that is, the greater the role it will play.

Question 1: What is specificity and non-specificity As far as immunity is concerned, specificity refers to a specific type of bacteria or virus, non-specificity refers to the ability to basically resist all invasions, specificity is acquired, and non-specificity is generally innate.

Question 2: What is non-specificity Non-specificity, also known as innate immunity or innate immunity, is a natural defense function that has been gradually established by humans in the course of long-term evolution. This type of immunity is characterized by the fact that everyone is born with it, and it does not target a specific pathogen, but has a certain defense effect against a variety of pathogens.

Question 3: What is specificity Specificity refers to the properties that distinguish it from other things. If used immunologically, it means that it is highly targeted.

See Specific immunity, also known as acquired immunity, is the acquisition of immunity through acquired infection (recovered or asymptomatic infection) or artificial vaccination (vaccines, vaccines, toxoids, immunoglobulins, etc.) that gives the body the ability to resist infection. It is generally formed after antigenic substances such as microorganisms ** (immunoglobulins, immune lymphocytes) and can react specifically with the antigen.

Specific immunity is specific and can resist repeated infection with the same microorganism and cannot be inherited.

Question 4: Hello doctor, what does this non-specificity and specificity mean that everyone is garbage and you are garbage.

Question 5: What does non-specific ** dye mean Hello landlord.

1 Non-specific ** infection refers to ordinary infection, that is, general pathogens, which can be cured by the usual antiviral or antibacterial ** after infection.

2 Specific** infection is mainly caused by designated viruses, such as hepatitis B virus, herpes virus, etc., these diseases usually require specified drugs**, and the effect will be better.

If you still have doubts, add them below.

Question 6: What is specific and non-specific Non-specific immunity refers to the body's response to common pathogens and pathogenic substances. Specific immunity is the body's response to a specific pathogen.

Such as allergic reactions. Their relationship: the first time a person comes into contact with an allergen, it is non-specific, once the antibody is produced in the body, the subsequent exposure to it produces specific immunity.

The residual spine is called innate immunity or innate immunity, which refers to the normal physiological defense function of the body, which can respond to the invasion of various pathogenic microorganisms and foreign bodies. Like specific immunity, it is a genetic trait that humans have acquired over a long evolutionary period.

Non-specific immunity is something that a person is born with, and specific immunity needs to go through a process to acquire. The inflammatory response is the ability of a person to return from a lifetime. Innate immunity can respond rapidly to various invading pathogenic microorganisms, and also plays an important role in the initiation and effector process of specific immunity.

Its features are as follows:

Non-specific is general.