2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Thaum ib qho antigen khi rau lub cev receptor molecule, nws yuav lossis tsis ua rau lub cev tiv thaiv kab mob. Antigens uas ntxias cov lus teb no yog hu ua immunogens. Yog li, nws tuaj yeem hais tias tag nrho cov immunogens yog antigens, tab sis tsis yog txhua tus antigens yog immunogens.
Yuav ua li cas antigen txawv ntawm ib qho immunogen?
Ib qho tshuaj tiv thaiv yog hais txog ib yam khoom tshwj xeeb khi rau cov tshuaj tiv thaiv kab mob lossis cov cell nto receptors ntawm B hlwb thiab T hlwb thaum lub cev tiv thaiv kab mob hais txog an antigen muaj peev xwm inducing lub cev tiv thaiv kab mob. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm antigen thiab immunogen.
Puas cov proteins muaj antigens?
Antigens yog feem ntau yog cov proteins, peptides, lossis polysaccharides. Qhov no suav nrog cov khoom (coats, capsules, cell phab ntsa, flagella, fimbrae, thiab toxins) ntawm cov kab mob, kab mob, thiab lwm yam kab mob. Lipids thiab nucleic acids yog antigenic nkaus xwb thaum ua ke nrog cov proteins thiab polysaccharides.
Haptens antigenic?
Yog li ntawd, txawm tias haptens xav tau cov cab cab los ua cov tshuaj tiv thaiv kab mob, lawv yog kuj antigenic vim tias lawv muaj peev xwm khi rau cov tshuaj tiv thaiv lossis lwm yam khoom ntawm lub cev tiv thaiv kab mob los ntawm hapten. -carrier molecule complex.
Puas yog cov tshuaj tiv thaiv immunoglobulins?
Immunoglobulins, tseem hu ua cov tshuaj tiv thaiv, yog glycoprotein molecules uas tsim los ntawm cov ntshav plasma (cov qe ntshav dawb). Lawv ua raws li ib feem tseem ceeb ntawm kev tiv thaiv kab mob los ntawm tshwj xeeblees paub thiab khi rau qee cov antigens, xws li cov kab mob lossis kab mob, thiab pab ua kom puas tsuaj.
Pom zoo:
Cov tshuaj tiv thaiv tam sim no puas tiv thaiv kab mob sib txawv?
2) qhov sib txawv tam sim no yog qhov sib txawv tshaj plaws ntawm COVID-19. Nws yog ze li ob zaug kis tau tus kab mob ua ntej thiab yuav ua rau mob hnyav dua. Txawm hais tias kev tshawb fawb qhia tias cov tshuaj tiv thaiv COVID-19 tsis tshua muaj txiaj ntsig zoo rau qhov sib txawv, cov tshuaj tiv thaiv tseem zoo li muab kev tiv thaiv COVID-19 hnyav.
Yuav noj tshuaj tua kab mob puas cuam tshuam rau cov tshuaj tiv thaiv kab mob?
Nws puas muaj kev nyab xeeb los txhaj tshuaj tiv thaiv COVID-19 nrog tshuaj tua kab mob? Tsis muaj kev cuam tshuam lossis cuam tshuam ntawm cov tshuaj tua kab mob thiab tshuaj tiv thaiv COVID-19, yog li thaum qhia, tshuaj tua kab mob tuaj yeem noj txhua lub sijhawm cuam tshuam nrog kev tswj hwm tshuaj tiv thaiv COVID-19.
Puas yog lub cev tiv thaiv kab mob hauv lub cev puas tsim cov tshuaj tiv thaiv?
Lub cev tiv thaiv kab mob tau txais, nrog kev pab los ntawm lub cev hauv lub cev, tsim cov hlwb (tshuaj tiv thaiv kab mob) los tiv thaiv koj lub cev los ntawm ib tus neeg invader tshwj xeeb. Cov tshuaj tiv thaiv no yog tsim los ntawm cov hlwb hu ua B lymphocytes tom qab lub cev tau raug rau cov neeg ua phem.
Nyob hauv cov kab mob cov qauv no ua rau cov tshuaj tiv thaiv kab mob?
Cov qauv thiab kev ua haujlwm ntawm txheej LPShauv cov kab mob gram tsis zoo muab qhov cuam tshuam rau qee hom molecules. Qhov no ua rau cov kab mob hauv lub cev tsis muaj zog rau qee pawg ntawm cov tshuaj tua kab mob loj [28]. Cov kab mob ua rau cov tshuaj tiv thaiv kab mob li cas?
Puas cov tshuaj tiv thaiv kab mob tsis ua haujlwm antigens?
Raws li cov tshuaj tiv thaiv kab mob sib kis, lawv tawm tsam thiab tshem tawm cov tshuaj tiv thaiv uas zoo ib yam rau ib qho uas ua rau lub cev tiv thaiv kab mob. Antibodies tua antigens los ntawm kev khi rau lawv. … Phagocytic cells rhuav tshem cov kab mob thiab kab mob antigens los ntawm kev noj lawv, thaum B hlwb tsim cov tshuaj tiv thaiv kab mob uas khi rau thiab tsis ua haujlwm antigens.
