Cov txheej txheem:
- Dab tsi tshwm sim thaum lub sijhawm tshem tawm clonal?
- Vim li cas thiaj xaiv clonal tshwm sim?
- kev xaiv clonal tshwm sim nyob qhov twg?
- clonal expansion tshwm sim nyob qhov twg?
Video: Thaum twg clonal deletion tshwm sim?
2024 Tus sau: Fiona Howard | [email protected]. Kawg hloov kho: 2024-01-10 06:38
Clonal deletion tuaj yeem tshwm sim hauv nruab nrab thaum lub sijhawm pib sib txawv ntawm cov tshuaj tiv thaiv tshwj xeeb T hlwb lossis B hlwb lossis txawm tias tom qab hauv cov chaw peripheral. Nyob rau hauv rooj plaub ntawm T hlwb, qhov chaw ntawm T cell sib txawv yog thymus (Sprent thiab Webb, 1995).
Dab tsi tshwm sim thaum lub sijhawm tshem tawm clonal?
Clonal deletion yog tshem tawm los ntawm apoptosis ntawm B hlwb thiab T hlwb uas tau nthuav tawm cov receptors rau nws tus kheej ua ntej txhim kho mus rau hauv cov tshuaj tiv thaiv kab mob siab tshaj plaws Qhov no tiv thaiv kev lees paub thiab kev puas tsuaj ntawm tus kheej lub hlwb, ua rau nws yog hom kev xaiv tsis zoo lossis qhov nruab nrab kam rau ua.
Vim li cas thiaj xaiv clonal tshwm sim?
Clonal xaiv yog txoj kev xav uas tshwj xeeb antigen receptors muaj nyob ntawm lymphocytes ua ntej lawv nthuav tawm nrog an antigen vim kev hloov pauv tsis sib xws thaum pib loj hlob thiab loj hlobTom qab kev nthuav qhia antigen, xaiv cov lymphocytes tau txais kev nthuav dav clonal vim lawv muaj qhov xav tau antigen receptor.
kev xaiv clonal tshwm sim nyob qhov twg?
Qhov kev ua kom muaj no tshwm sim hauv cov kab mob lymphoid thib ob xws li tus po thiab cov qog ntshav. Nyob rau hauv luv luv, txoj kev xav yog ib qho kev piav qhia ntawm lub mechanism rau tiam ntawm ntau haiv neeg ntawm antibody tshwj xeeb.
clonal expansion tshwm sim nyob qhov twg?
Koj tuaj yeem qhia tau tias kev nthuav dav clonal tshwm sim thaum koj xav tias pob khaus (cov qog o o) hauv koj lub caj dab lossis lwm qhov chaw. Thaum cov lymphocytes ntau thaum lub sij hawm clonal expansion, ib txhia ntawm lawv yog destined mus nyob raws li lub cim xeeb T thiab B hlwb.
Pom zoo:
Clonal deletion yog dab tsi?
Clonal deletion yog kev tshem tawm los ntawm apoptosis ntawm B hlwb thiab T hlwb uas tau nthuav tawm cov receptors rau nws tus kheej ua ntej txhim kho mus rau hauv cov tshuaj tiv thaiv kab mob qog noj ntshav. Qhov no tiv thaiv kev lees paub thiab kev puas tsuaj ntawm tus kheej lub hlwb, ua rau nws yog hom kev xaiv tsis zoo lossis kev ua siab ntev hauv nruab nrab.
Puas yog kev tshwm sim lossis kev tshwm sim?
Reveling, kuj spelled reveling, txhais tau tias muaj lub sij hawm zoo, los yog zoo siab rau ib yam dab tsi. Yog tias koj tawm mus ua kev zoo siab rau koj kawm tiav thiab koj haus dej haus, tog thiab muaj lub sijhawm zoo, qhov no yog qhov piv txwv ntawm thaum koj rov qab los .
Puas yog nws tshwm sim lossis tshwm sim?
Raws li lub npe qhov txawv ntawm qhov tshwm sim thiab qhov tshwm sim. yog happenchance is a coincidental happen while happenstance is (countable) a chance or random event or random events . Puas yog ib lo lus? Ib qho xwm txheej tsis tau xav txog:
Puas muaj qhov sib txawv ntawm qhov tshwm sim thiab qhov tshwm sim?
Raws li lub npe qhov txawv ntawm qhov tshwm sim thiab qhov tshwm sim. yog happenchance is a coincidental happen while happenstance is (countable) a chance or random event or random events . Puas muaj lo lus tshwm sim? : a xwm txheej tshwj xeeb yog vim muaj caij nyoog Lawv tuaj ua ke los ntawm qhov tshwm sim .
Cov siphons tshwm sim thiab tshwm sim nyob qhov twg?
Ntawm ob qhov qhib ntawm tom qab kawg ntawm clam. Qhov qhib qhov ntau dua yog cov siphon uas tshwm sim uas nqa dej mus rau hauv cov clam thiab qhov qhib qhov rooj ntau dua yog cov siphon uas tshwm sim uas cov khib nyiab & dej tawm . Cov kab mob dab tsi muaj tshwm sim thiab Excurrent siphon?
