Embryos rau yav tom ntej tib neeg clones

2024 Tus sau: Seth Attwood | [email protected]. Kawg hloov kho: 2023-12-16 16:06

Rau lub hauv paus ntawm lub neej, fusion ntawm txiv neej thiab poj niam cov kab mob yog tsim nyog. Nws yog li ntawd? Nws puas tuaj yeem ua yam tsis muaj nws? Raws li The Daily Mail, cov kws tshawb fawb los ntawm University of Maastricht (Netherlands) tau tsim cov embryo raws li cov qia hlwb. Tsis siv cov qe thiab phev.

Rau lawv cov kev sim, cov kws tshawb fawb tau ua ke 2 pawg ntawm cov qia hlwb los ntawm cov tib neeg sib txawv hauv ib lub raj. Ntxiv mus, muaj kev sib koom ua ke, lub xovtooj ntawm no tau loj hlob thiab mus txog rau theem ntawm lub embryo, tsis txawv ntawm cov qauv ntawm cov embryos tsim nyob rau hauv "txoj cai" txoj kev. Cov hlwb tau loj hlob mus rau theem pib ntawm lub embryo ua ntej cog rau hauv lub tsev menyuam, dhau los ua blastocyst, uas yog, cov txheej txheem ntawm kev sib txawv ntawm tes tau pib nyob rau hauv lawv. Ntxiv mus, tom qab blastocyst tau hloov mus rau hauv lub tsev menyuam, nws ua rau muaj kev hloov pauv zoo ib yam li cov uas tshwm sim nyob rau hauv lub embryo theem ntawm peb thiab ib nrab hnub.

Tau kawg, qhov kev sim no tsis tau ua rau tib neeg, tab sis ntawm cov nas hauv chav kuaj. Tab sis cov kws tshawb fawb tau hais tias thaum qhov kev sim ua tiav, cov thev naus laus zis tshiab yuav ua rau kev tsim cov kab mob muaj sia yam tsis muaj kev koom tes ntawm cov phev lossis qe hauv peb xyoos tom ntej. Kev tsim, lossis txawm tias "tsim" ntawm cov embryos no yuav qhib qhov rooj rau qhov tsis muaj kev txwv ntawm cov tib neeg zoo tib yam uas tuaj yeem siv rau kev tshawb fawb. Tab sis qee cov kws tshawb fawb tau ceev faj txog cov cuab yeej no. Tom qab tag nrho, theoretically, cov txheej txheem no tuaj yeem rov ua dua rau tib neeg, txawm tias nws yuav siv sijhawm ntau dua rau qhov no. Raws li cov kws tshaj lij, qhov no yuav siv sijhawm 15 mus rau 20 xyoo, tab sis kev cia siab ntawm kev tsim tag nrho cov tub rog ntawm clones zoo li daunting me ntsis.