Primary vs Secondary Lymphoid Organs
Tib neeg lub cev tiv thaiv kab mob yog ib qho tseem ceeb, uas pab txhawb kev tiv thaiv tseem ceeb tiv thaiv cov kab mob txawv teb chaws thiab kab mob. Cov ntaub so ntswg aggregates qhov twg leukocytes paub tab, sib txawv, thiab proliferate yog hu ua cov qog nqaij hlav lymphoid. Lawv feem ntau yog tsim los ntawm cov hlwb epithelial thiab stromal hlwb, teem rau hauv lub cev los yog tsub zuj zuj ntawm diffuse lymphoid cov ntaub so ntswg. Cov kab mob Lymphoid yog cais ua cov kab mob hauv nruab nrab thiab theem nrab lymphoid.
Primary Lymphoid Organs
Cov kab mob hauv lub hauv paus pib muaj xws li thymus thiab pob txha pob txha. Lawv yog cov chaw uas B thiab T lymphocytes sib txawv ntawm cov qia hlwb; yog li ntawd, hu ua qhov chaw ntawm lymphopoiesis. Cov kab mob no tau pom thawj zaug hauv cov noog, uas qhov kev loj hlob ntawm B lymphocyte tshwm sim hauv bursa ntawm Fabricius. Tib neeg tsis muaj lub cev no. Hauv tib neeg, B lymphocytes paub tab thiab sib txawv los ntawm cov kab mob hematopoietic hauv daim siab fetal thaum lub sij hawm embryonic lub neej. Tom qab yug me nyuam, kev loj hlob thiab kev sib txawv ntawm B hlwb tshwm sim hauv cov pob txha pob txha. Progenitor hlwb ntawm cov pob txha pob txha sib txawv rau hauv T lymphocytes, thaum lawv tsiv mus rau thymus. Yog li, txoj haujlwm tseem ceeb ntawm thymus yog coj T lymphocytes kom sib txawv ntawm tus kheej thiab tsis yog nws tus kheej antigens.
Secondary Lymphoid Organs
Cov kab mob lymphoid thib ob suav nrog cov qog ntshav qab zib, Peyer's thaj ua rau thaj, spleen, tonsils thiab adenoids. Lawv yog cov chaw uas cov antigen-tsav proliferation thiab sib txawv, thiab lymphocyte teb rau pathogens thiab txawv teb chaws antigens tshwm sim. Cov kab mob kis tau zoo yuav pom nyob rau hauv cov kabmob no.
Source: thefreedictionary.com
Dab tsi yog qhov txawv ntawm Cov Kab Mob Hauv Paus Tsev Kawm Ntawv thiab theem nrab Lymphoid?
• Cov kab mob hauv lub hauv paus pib tsim ua ntej cov kab mob hauv nruab nrab thaum lub sij hawm ontogeny.
• Cov kab mob hauv lub hauv paus pib yog cov thymus thiab cov pob txha pob txha, qhov thib ob cov qog ntshav qog ntshav yog cov qog ntshav, Peyer's thaj ua rau thaj, tonsils, adenoids thiab spleen.
• Cov kab mob hauv lub hauv paus pib yog qhov chaw loj hlob rau T thiab B hlwb, qhov thib ob cov qog ntshav qog ntshav yog qhov chaw ua haujlwm ntawm tes rau cov laus T thiab B hlwb.
• Kev sib txawv ntawm cov lymphocytes yog tshwm sim nyob rau hauv thawj cov qog nqaij hlav hauv nruab nrog cev thaum muaj kev sib cuam tshuam ntawm lub cev tiv thaiv kab mob nrog rau ib leeg thiab cov txheej txheem antigen tau tshwm sim hauv cov kab mob lymphoid thib ob.
• Cov kab mob hauv lub cev hauv lub cev ua haujlwm ua lub microenvironment rau antigen- ywj siab sib txawv ntawm cov lymphocytes, whereas lwm yam lymphoid organs ua lub microenvironment rau attracting antigen- tshwj xeeb lymphocytes, pab txhawb lub lymphocyte sib txawv thiab faib cov txawv effector hlwb los yog lawv cov khoom. lwm qhov ntawm lub cev.
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