| 释义 |
blood type
blood typen. See blood group.blood type n (Medicine) another name for blood group blood′ group`
n. any of various classes into which human blood can be divided according to immunological compatibility based on the presence or absence of specific antigens on red blood cells. Also called blood type. Compare ABO system, Rh factor. [1915–20] blood type Any of the four main types into which human blood is divided: A, B, AB, and O. Blood types are based on the presence or absence of certain substances, called antigens, on red blood cells. Also called blood group.Did You Know? Blood transfusions used to be a doctor's treatment of last resort, since they often caused people to get sick and die. But in the 1890s, a scientist named Karl Landsteiner began to solve the transfusion puzzle. He found that all human red blood cells belonged to one of four groups, or blood types, which he named A, B, AB, and O. The types refer to substances, called antigens, found on the surface of these cells. Antibodies circulating in a person's blood normally recognize the antigens in that same person's blood cells and don't react with them. However, if a person with one blood type is given blood of another type, the antibodies bind to the foreign antigens, causing clumping of the blood and other serious reactions. Thus the key to the transfusion puzzle is to give a person blood that has matching antigens. Today, hospitals always test a blood sample before a transfusion to make sure there is a good match.blood typeAny of various types of blood (notably A, B, AB, O, Rh-positive, Rh-negative) named for the antigen(s) they do or do not contain. Mismatched blood transfusions cause adverse reactions in recipients.Thesaurus| Noun | 1. |  blood type - human blood cells (usually just the red blood cells) that have the same antigensblood groupblood - the fluid (red in vertebrates) that is pumped through the body by the heart and contains plasma, blood cells, and platelets; "blood carries oxygen and nutrients to the tissues and carries away waste products"; "the ancients believed that blood was the seat of the emotions"group A, type A, A - the blood group whose red cells carry the A antigengroup B, type B, B - the blood group whose red cells carry the B antigengroup AB, type AB, AB - the blood group whose red cells carry both the A and B antigensgroup O, type O, O - the blood group whose red cells carry neither the A nor B antigens; "people with type O blood are universal donors"Rh positive, Rh-positive blood type - the blood group (approximately 85% of people) whose red cells have the Rh factor (Rh antigen)Rh negative, Rh-negative blood, Rh-negative blood type - the blood group whose red cells lack the Rh factor (Rh antigen) |
Translationsblood type
blood type: see blood groupsblood groups,
differentiation of blood by type, classified according to immunological (antigenic) properties, which are determined by specific substances on the surface of red blood cells.
..... Click the link for more information. .blood type[′bləd ‚tīp] (immunology) blood group blood type
type [tīp] the general or prevailing character of any particular case, such as of a disease, person, or substance.type A a behavior pattern characterized by excessive competitiveness and aggressiveness. See type A behavior.asthenic type a constitutional type marked by a slender body, long neck, long, flat chest and abdomen, and poor muscular development.athletic type a constitutional type marked by broad shoulders, deep chest, flat abdomen, thick neck, and good muscular development.blood type 1. blood group.2. the phenotype of an individual with respect to a blood group system.body type (constitutional type) a constellation of traits related to body build.phage type a subgroup of a bacterial species susceptible to a particular bacteriophage and demonstrated by typing" >phage typing. Called also lysotype and phagotype.pyknic type a constitutional type marked by rounded body, large chest, thick shoulders, broad head, and short neck.blood type (blŭd tīp), The specific agglutination pattern of erythrocytes of an individual to the antisera of one blood group; for example, the ABO blood group consists of four major blood types: O, A, B, and AB. This classification depends on the presence or absence of two major antigens: A or B. Type O occurs when neither is present and type AB when both are present. The blood type is the genetic phenotype of the individual for one blood group system and may be determined using different antisera available for testing. See Blood Groups Appendix.blood typen. See blood group.blood type (blŭd tīp) The specific reaction pattern of erythrocytes of a person to the antisera of one blood group; e.g., the ABO blood group consists of four major blood types: O, A, B, and AB. This classification depends on the presence or absence of two major antigens: A or B. Type O occurs when neither is present and type AB when both are present.
See also: blood groupBlood typeBlood categories based on the presence or absence of certain antigens on the red blood cells.Mentioned in: Blood Typing and CrossmatchingPatient discussion about blood typeQ. HIV - does it infect specific Blood Types? A friend of mine joined the army and they took him to an experiment and infected him with HIV. But he was not infected- he said because he has a certain blood type. Is this true?A. HIV, as all other viruses need specific cells,s surface proteins which called receptors,in case of HIV these receptors are found in certain WBCs that known as T-helper cells which named as T4 cells. All humans have these T4 cells but some people lack the receptor that necessary for virus attachment and pentration of the cell which leeds to the inablity of the virus to cause infection and become a target for the immune system. But they c can infect other suseptable people. Q. Is it true that people with different blood type should have different diets? A. I myself believe that that theory was kind of "psychological" advise : if you believe on it, then you do it, then you will have positive result. But I agree with violet that there is still none appropriate study to prove that theory.
And by the way, what "eat diet according to your blood type" suggests most likely are full lists of healthy foods, so I do believe if you follow a healthy diet program (doesn't have to be blood-type-diet), you will have a healthy life indeed..
Stay healthy always.. Q. is it possible to change my blood type from ab to ab-? A. not really no...i mean there's a possibility if you'll have bone marrow and liver transplant-
http://www.news.com.au/entertainment/story/0,26278,23106284-5007185,00.html
and immunologically there shouldn't be a problem, because the body will react to an addition of proteins but not the lack of them (Rh-). but i fail to see why you want to do that. More discussions about blood typeFinancialSeeTypeAcronymsSeebad tripblood type
Synonyms for blood typenoun human blood cells (usually just the red blood cells) that have the same antigensSynonymsRelated Words- blood
- group A
- type A
- A
- group B
- type B
- B
- group AB
- type AB
- AB
- group O
- type O
- O
- Rh positive
- Rh-positive blood type
- Rh negative
- Rh-negative blood
- Rh-negative blood type
|