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| This glossary contains: 19186 medical terms |
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Humoral immunity
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Humoral immunity Any immune reaction that can be transferred with immune serum is termed humoral immunity (as opposed to cell-mediated immunity). In general, this term refers to resistance that results from the presence of specific antibody.
RELATED TERMS--------------------------------------
Immune
Resistant to a particular disease.
Serum
The fluid portion of the blood. It is essentially similar in composition to plasma but lacks fibrinogen and other substances that are used in the coagulation (blood clotting) process.
Immunity
When a body's immune system helps fend off disease.
Antibody
An infection-fighting protein molecule in blood or secretory fluids that tags, neutralizes, and helps destroy pathogenic microorganisms (eg, bacteria, viruses) or toxins. Antibodies, known generally as immunoglobulins, are made and secreted by B-lymphocytes in response to stimulation by antigens. Each specific antibody binds only to the specific antigen that stimulated its production.
SIMILAR TERMS--------------------------------------
Humorsol
Humorsol is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): demecarium bromide.
PREVIOUS AND NEXT TERMS--------------------------------------
H chain
The larger of the two types of chains that comprise a normal immunoglobulin or antibody molecule.
Helper T cells
A class of T cells which help trigger B cells to make antibody against thymus-dependent antigens. Helper T cells also help generate cytotoxic T cells.
Heterophile antigen
A cross-reacting antigen that appears in widely ranging species such as humans and bacteria.
Hinge region
A flexible, open segment of an antibody molecule that allows bending of the molecule. The hinge region is located between Fab and Fc and is susceptible to enzymatic cleavage.
Histocompatibility
Literally, the ability of tissues to get along; in immunology, it means identity in all transplantation antigens. These antigens, in turn, are collectively referred to as histocompatibility antigens.
Humoral immunity
Hybridoma
A hybrid cell that results from the fusion of an antibody-secreting cell with a malignant cell; the progeny secrete antibody without stimulation and proliferate continuously both in vivo and in vitro.
Hypersensitivity
State of reactivity to antigen that is greater than normal for the antigenic challenge; hypersensitivity is the same as allergy and denotes a deleterious outcome rather than a protective one.
Hypervariable regions
Portions of the light and heavy immunoglobulin chains that are highly variable in amino acid sequence from one immunoglobulin molecule to another, and that, together, constitute the antigen-binding site of an antibody molecule. Also, portions of the T-cell receptor which constitute the antigen-binding site.
Hallucinosis
A morbid condition, as in acute alcoholic hallucinosis, which is characterized by recurrent acute attacks marked by hallucinated auditory threats of persecution.
Haptic
Having to do with touch and the sense of touch. 2. Pertaining to the skin feelings and the sense of touch.
RELATED TERMS--------------------------------------
Immune
Resistant to a particular disease.
Serum
The fluid portion of the blood. It is essentially similar in composition to plasma but lacks fibrinogen and other substances that are used in the coagulation (blood clotting) process.
Immunity
When a body's immune system helps fend off disease.
Antibody
An infection-fighting protein molecule in blood or secretory fluids that tags, neutralizes, and helps destroy pathogenic microorganisms (eg, bacteria, viruses) or toxins. Antibodies, known generally as immunoglobulins, are made and secreted by B-lymphocytes in response to stimulation by antigens. Each specific antibody binds only to the specific antigen that stimulated its production.
SIMILAR TERMS--------------------------------------
Humorsol
Humorsol is a prescription or over-the-counter drug which is (or once was) approved in the United States and possibly in other countries. Active ingredient(s): demecarium bromide.
PREVIOUS AND NEXT TERMS--------------------------------------
H chain
The larger of the two types of chains that comprise a normal immunoglobulin or antibody molecule.
Helper T cells
A class of T cells which help trigger B cells to make antibody against thymus-dependent antigens. Helper T cells also help generate cytotoxic T cells.
Heterophile antigen
A cross-reacting antigen that appears in widely ranging species such as humans and bacteria.
Hinge region
A flexible, open segment of an antibody molecule that allows bending of the molecule. The hinge region is located between Fab and Fc and is susceptible to enzymatic cleavage.
Histocompatibility
Literally, the ability of tissues to get along; in immunology, it means identity in all transplantation antigens. These antigens, in turn, are collectively referred to as histocompatibility antigens.
Humoral immunity
Hybridoma
A hybrid cell that results from the fusion of an antibody-secreting cell with a malignant cell; the progeny secrete antibody without stimulation and proliferate continuously both in vivo and in vitro.
Hypersensitivity
State of reactivity to antigen that is greater than normal for the antigenic challenge; hypersensitivity is the same as allergy and denotes a deleterious outcome rather than a protective one.
Hypervariable regions
Portions of the light and heavy immunoglobulin chains that are highly variable in amino acid sequence from one immunoglobulin molecule to another, and that, together, constitute the antigen-binding site of an antibody molecule. Also, portions of the T-cell receptor which constitute the antigen-binding site.
Hallucinosis
A morbid condition, as in acute alcoholic hallucinosis, which is characterized by recurrent acute attacks marked by hallucinated auditory threats of persecution.
Haptic
Having to do with touch and the sense of touch. 2. Pertaining to the skin feelings and the sense of touch.
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This dictionary contains 19186 terms.
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