Video: Cov hlwb twg koom nrog hauv kev tiv thaiv kev tiv thaiv?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov hlwb ntawm kev yoog raws tiv thaiv kab mob yog cov lymphocytes – B hlwb thiab T hlwb . B hlwb , uas tau muab los ntawm cov leeg pob txha, dhau los ua cov cell uas tsim cov tshuaj tiv thaiv kab mob. T hlwb , uas mature nyob rau hauv lub thymus ua , sib txawv rau hauv cov hlwb uas yog koom nrog cov lymphocyte maturation, lossis tua cov kab mob uas muaj tus kab mob.
Tom qab ntawd, cov hlwb twg koom nrog hauv lub cev thiab kev tiv thaiv kab mob?
Ntau yam ntawm hlwb hauv lub cev tsis muaj zog system (xws li dendritic hlwb , macrophages, mast hlwb , neutrophils, basophils thiab eosinophils) tsim cytokines lossis cuam tshuam nrog lwm yam hlwb ncaj qha nyob rau hauv thiaj li yuav qhib lub adaptive tiv thaiv kab mob lawv.
Ib tug kuj yuav nug, nyob qhov twg cov hlwb ntawm adaptive tiv thaiv kab mob pom? Cov cov cell ntawm adaptive immune system lymphocytes (B. hlwb thiab T. hlwb ) yog pom hauv tib neeg lub cev pob txha.
Ua li no, dab tsi cuam tshuam rau kev tiv thaiv kab mob?
Adaptive tiv thaiv tau txhais los ntawm qhov muaj cov lymphocytes, txawm tias T lossis B cells, thiab suav nrog ob qho CD8+ cytotoxic T cells uas yog cov txiaj ntsig ntawm cov cell uas ncaj qha rhuav tshem cov qog nqaij hlav, CD4+ tus pab T cells uas tswj CD8+ T-cell thiab B-cell ua haujlwm, thiab B cov cell uas nthuav tawm antigen thiab tsim cov tshuaj tiv thaiv.
Puas yog B thiab T cells innate lossis hloov pauv?
Tsis zoo li cov innate kev tiv thaiv kab mob, yoog raws lub cev tiv thaiv kab mob cia siab rau tsawg hom cell ua ua nws cov haujlwm: B hlwb thiab T hlwb . Ob leeg B hlwb thiab T hlwb yog cov lymphocytes uas yog muab los ntawm tej hom qia hlwb , hu ua multipotent hematopoietic qia hlwb , hauv lub cev pob txha.
Pom zoo:
Cov txheej txheem twg ntawm kev kawm lub hlwb cuam tshuam nrog kev txhaj tshuaj rau tus neeg mob nrog cov piam thaj hauv ntshav?
Lub paj hlwb positron emission tomography (PET) scan yog kev ntsuas duab uas tso cai rau cov kws kho mob pom tias koj lub hlwb ua haujlwm zoo li cas. Kev tshuaj xyuas ntes cov duab ntawm kev ua haujlwm ntawm lub hlwb tom qab cov tshuaj tiv thaiv kab mob "tracers" tau nqus mus rau hauv cov ntshav. Cov neeg taug kev no "txuas" rau cov sib txuas zoo li qab zib (qab zib)
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