![Clonal cells yog dab tsi? Clonal cells yog dab tsi?](https://i.answers-medical.com/preview/medical-health/13906884-what-are-clonal-cells-j.webp)
Video: Clonal cells yog dab tsi?
![Video: Clonal cells yog dab tsi? Video: Clonal cells yog dab tsi?](https://i.ytimg.com/vi/0gvPNWyP_Bo/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
A clone yog ib pawg uas zoo tib yam hlwb uas qhia txog caj ces ib txwm, txhais tau tias lawv tau los ntawm tib yam ntawm tes . Kev sib haum xeeb qhia txog lub xeev ntawm a ntawm tes los yog cov khoom tau muab los ntawm ib qhov chaw lossis lwm qhov.
Tsis tas li, dab tsi yog txhais los ntawm kev xaiv clonal?
Kev xaiv tus kheej yog txheej txheem thov piav qhia yuav ua li cas ib leeg B lossis T cell uas lees paub tias muaj antigen uas nkag mus rau hauv lub cev xaiv los ntawm cov xov tooj ntawm tes uas twb muaj lawm ntawm qhov sib txawv antigen tshwj xeeb thiab tom qab ntawd rov tsim dua los tsim a txiv neej cell pejxeem uas tshem tawm cov antigen.
Tsis tas li, clonal txhais li cas hauv kev mob qog noj ntshav? Clonal Evolution. Clonal evolution qhia tias nthuav dav ntawm cov pejxeem ntawm mob qog noj ntshav cov cell los ntawm cov tib neeg ib leeg-cell ua rau qog sib txawv hauv cov kab mob pathology thiab cov txheej txheem molecular nrog tau txais kev hloov pauv caj ces thiab epigenetic (Stingl thiab Caldas, 2007).
Hauv qhov no, txhais li cas los ntawm kev nthuav dav clonal?
Clonal nthuav dav yog txheej txheem uas cov ntxhais ntxhais tshwm sim los ntawm niam txiv cell. Thaum lub sij hawm B cell clonal nthuav dav , ntau daim ntawv theej ntawm B cell tau tsim tawm uas sib koom nrog thiab tshwj xeeb ntawm tib lub antigen.
Polyclonal cells yog dab tsi?
Polyclonal B ntawm tes lus teb yog hom kev tiv thaiv kab mob uas pom los ntawm kev tiv thaiv kab mob ntawm cov tsiaj. Nws ua kom ntseeg tau tias ib tus antigen tau lees paub thiab tawm tsam los ntawm nws cov ntu sib tshooj, hu ua epitopes, los ntawm ntau qhov clones ntawm B ntawm tes.
Pom zoo:
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Cov hlwb uas tsim myelin, tiv thaiv, txhawb nqa, thiab tswj kev sib npaug hauv koj lub paj hlwb hu ua glial cells. Lawv kuj tseem raug hu ua neuroglia thiab txawm tias yooj yim dua glia. Hauv cov lus ntxaws ntxaws, neuroglia yog cov hlwb hauv koj lub paj hlwb uas tsis yog neurons
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Thaum cov tshuaj tiv thaiv kab mob tiv thaiv kab mob tiv thaiv kab mob, nws qhov epitopes thaum kawg yuav ua haujlwm nrog B-lymphocytes nrog B-cell receptors ntawm lawv qhov chaw uas ntau dua lossis tsawg dua haum thiab qhov no ua rau cov B-lymphocytes. Cov txheej txheem no yog hu ua kev xaiv tus kheej. Qhov no yog hu ua clonal expansion
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T hlwb yog li ntawd hu ua vim lawv feem ntau tsim nyob rau hauv lub thymus. Raws li cov npe hais tias pab T hlwb 'pab' lwm lub hlwb ntawm lub cev tiv thaiv kab mob, thaum cytotoxic T hlwb tua cov kab mob kis kab mob thiab qog. Tsis zoo li cov tshuaj tiv thaiv kab mob, TCR tsis tuaj yeem khi cov tshuaj tiv thaiv ncaj qha
Lub luag haujlwm ntawm T cells thiab B cells yog dab tsi?
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T cells koom nrog hauv kev tiv thaiv kab mob ntawm tes, qhov B hlwb feem ntau yog lub luag haujlwm rau kev tiv thaiv kev dag ntxias (hais txog cov tshuaj tiv thaiv). Kev ua haujlwm ntawm T hlwb thiab B hlwb yog kom paub txog cov 'tsis yog tus kheej' antigens, thaum lub sijhawm ua haujlwm hu ua antigen nthuav qhia
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Ependymal Cell. Ependymal cells yog ib hom tshwj xeeb ntawm cov epithelial cells uas ua kab ke ntawm lub paj hlwb ntawm lub paj hlwb thiab ua lub luag haujlwm tseem ceeb hauv kev tsim cov kua dej hauv lub paj hlwb