Leej twg npaj cov cell yog totipotent?

2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44

Kev txhais ntawm totipotent qia hlwb

Thawj qhov kev sim ntawm totipotency tau ua hauv nas los ntawm Tarkowski (1959)², leej twg cais ib leeg blastomere (cov hlwb tsim los ntawm kev faib cov zygote ua , muaj 2-16 hlwb), muab tso rau hauv ib qho khoob zona pellucida, thiab saib xyuas nws txoj kev loj hlob mus rau hauv yug me nyuam.

Raws li txoj cai, cov xov tooj ntawm tes yog dab tsi?

Totipotent hlwb tuaj yeem tsim txhua qhov ntawm tes hom kab mob hauv lub cev, ntxiv rau cov extraembryonic, lossis placental, hlwb . Embryonic hlwb hauv thawj ob peb ntawm ntawm tes kev faib tom qab fertilization yog tib yam hlwb uas yog muaj zog.

Qhov thib ob, zygote puas yog totipotent qia cell? Totipotent qia hlwb . Cov zygote ua los yog fertilized qe yog, tau kawg, a totipotent qia cell . Cov paub thiab zoo characterized totipotent qia hlwb tsuas yog pom nyob rau hauv cov ntaub so ntswg embryonic thaum ntxov thiab muab tau los ntawm thawj ob peb yam ntawm tes kev sib faib tom qab fertilization.

Ib yam li ntawd, tib neeg lub hlwb puas totipotent?

Totipotent qia hlwb yog ib qho tseem ceeb tshaj plaws hlwb hom vim tias lawv muaj peev xwm txhim kho mus rau ib qho ntawm tes pom hauv tib neeg lub cev. Zygote faib ntau zaus thiab cov ntawv hlwb uas yog cov precursors rau trillions ntawm hlwb uas thaum kawg yuav ua tus tib neeg lub cev.

Cov lus teb totipotent cell yog dab tsi?

Totipotent qia hlwb tuaj yeem sib txawv hauv embryonic thiab extraembryonic ntawm tes hom. Cov no hlwb yog tsim los ntawm fusion ntawm qe thiab phev ntawm tes , thiab tuaj yeem tsim lub cev ua tiav, siv tau. Xovtooj tsim los ntawm thawj ob peb kev faib ntawm lub qe fertilized kuj totipotent.