Video: Cov kab mob puas tuaj yeem muaj sia nyob nrog tshuaj ntsiav?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov tshuaj ntsiav yog suav tias yog virulence factor vim nws txhim kho lub peev xwm ntawm kab mob ua rau muaj kab mob (piv txwv li tiv thaiv phagocytosis). Cov tshuaj ntsiav tau tiv thaiv cov hlwb los ntawm engulfment los ntawm eukaryotic hlwb, xws li macrophages. Lawv kuj cais tawm kab mob kab mob thiab feem ntau cov khoom siv tshuaj lom neeg xws li xab npum.
Ntxiv mus, puas yog tag nrho cov kab mob hauv lub cev muaj cov tshuaj ntsiav?
Ntau kab mob ntawm tes zais qee cov khoom siv sab nraud hauv daim ntawv a tshuaj ntsiav los yog ib txheej slime. Ib txheej slime yog xoob txuam nrog cov kab mob thiab tuaj yeem ntxuav tau yooj yim, whereas a tshuaj ntsiav yog nruj nreem rau kab mob thiab muaj ciam teb meej.
Ib sab saum toj no, dab tsi yog cov kab mob encapsulated? Lub sij hawm ' cov kab mob encapsulated ' hais txog kab mob npog nrog polysaccharide capsule. Piv txwv li kab mob xws li Streptococcus pneumoniae, Klebsiella, Haemophilus influenzae, Neisseria meningitidis, thiab Pseudomonas aeruginosa.
Cov lus nug tseem yog, lub luag haujlwm ua cov tshuaj tua kab mob ua rau kis mob li cas?
Nws pab cov kab mob kom khiav tawm tus tswv tsev tiv thaiv thaum nws nkag mus rau tus tswv tsev. Tshuaj ntsiav muab kev tiv thaiv los ntawm phagocytosis, cia cov kab mob nyob hauv lub cev.
Puas yog cov kab mob capsules Antigenic?
Cov kab mob tua kab mob yog ib qho ntawm cov txheej txheem sab nrauv tshaj plaws ntawm kab mob nto, uas tuaj yeem ua ib puag ncig tag nrho antigenic molecules los yog tej zaum yuav coexpressed nrog rau lwm yam cov kab mob antigens.
Pom zoo:
Cov tshuaj twg yog siv rau mob hnyav lossis mob hnyav uas tsis tuaj yeem kho nrog lwm yam tshuaj tua kab mob?
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Ntau tus neeg mob yog tshwm sim los ntawm kev kis kab mob los yog kab mob. Cov kab mob feem ntau tuaj yeem kho nrog tshuaj tua kab mob, txawm hais tias hom tshuaj tiv thaiv kab mob tiv thaiv kab mob tau pib tshwm sim. Cov kab mob ua teeb meem rau lub cev tiv thaiv kab mob vim tias lawv nkaum hauv cov cell