Name: 妳/你感覺到另一個TA的存在？DNA解析看端倪 🧬 (Signs There Might Be Someone Else Inside You 🧬)
Uploaded: 2026-01-19T17:38:57.000Z
Duration: 3 min 47 s

Did you know you could be a chimera and not even know it?

你知道你可能就是個嵌合體，而且還不知道嗎？

I don't mean a fire breathing lion, goat, snake hybrid.

我說的不是那種會噴火的獅子、山羊、蛇混合體喔。

That's just a mythical creature, unfortunately.

And I'm pretty sure you'd notice if you had the body parts of other animals sticking out from your back.

而且我確定，如果你的背上長出其他動物的身體部位，你一定會注意到。

You should probably turn around and check though, right?

不過你還是應該轉過來檢查一下，對吧？

Comprised of at least two genetically distinct sets of cells, which means their bodies contain at least two two different sets of DNA.

由至少兩組基因上獨特的細胞組成，這意味著他們的身體裡至少有兩組不同的DNA。

A chimera's cell populations come from multiple zygotes, which are fertilized eggs.

嵌合體的細胞群來自多個受精卵，也就是受精卵。

This can naturally happen in a few different ways.

For instance, while a fetus is in the womb, cells can travel across the placenta.

例如，當胎兒在子宮裡時，細胞可以穿過胎盤。

This can lead to the fetus absorbing a few of its parent cells or its parent absorbing some of its cells.

這可能會導致胎兒吸收一些來自父母的細胞，或者父母吸收一些來自胎兒的細胞。

Then there is twin chimerism, which is which happens after fraternal twins are conceived.

接著是雙胞胎嵌合體症，這是異卵雙胞胎受孕後發生的情況。

但其中一個胚胎在子宮裡死亡。

The surviving embryo could absorb some of the cells from the deceased embryo.

存活下來的胚胎可能會吸收已故胚胎的一些細胞。

These cells are most often found in the bloodstream.

Finally, there is fusion or tetragometic chimerism.

最後，還有融合或四合體嵌合體症。

This can also happen with the deceased fraternal twin embryo.

這也可能發生在已故的異卵雙胞胎胚胎身上。

But in this case, the two zygotes fuse together, forming one embryo.

但這種情況下，兩個受精卵會融合在一起，形成一個胚胎。

Individuals with this type of chimerism will will have tissues made up of cells from one or both zygotes, which means that you could be your own twin.

罹患這種嵌合體症的人，其組織會由一個或兩個受精卵的細胞組成，這意味著你可能就是你自己的雙胞胎。

In rare instances, people with tetragametic chimerism may have patches of different colored skin, have two different colored eyes, or have both male and female genitalia.

在極少數情況下，罹患四合體嵌合體症的人，可能會出現不同顏色的皮膚斑塊、兩隻眼睛顏色不同，或是同時擁有男性和女性生殖器。

While those with microchimerism may have autoimmune issues.

而罹患微嵌合體症的人，可能會出現自體免疫問題。

But most often these individuals don't have any symptoms and can live their whole lives without knowing it.

但大多數情況下，這些人沒有任何症狀，一生都可能不知道自己罹患此症。

Scientists don't know how many people have natural chimerism, but

科學家們不知道有多少人罹患自然嵌合體症，但

some some theorize it could be up to 10% of the population.

有些人推測，比例可能高達人口的 10%。

Though chimerism can occur artificially as well.

不過，嵌合體症也可能透過人工方式發生。

A recipient of a transfusion or transplant can absorb some of their donor's cells, which is a form of microchimerism.

輸血或移植的接受者可能會吸收捐贈者的一些細胞，這是一種微嵌合體症。

This can happen even if the donor isn't human.

這即使在捐贈者不是人類的情況下也可能發生。

Xenotransplantation is when organs, cells or tissues are transplanted or infused across different species.

異種移植是指器官、細胞或組織在不同物種之間進行移植或輸注。

Scientists have been experimenting in this field for over a century and they believe the potential benefits are considerable, especially as the demand for transplants continues to exceed the supply.

科學家們在這個領域已經研究了一個多世紀，他們認為潛在的好處是相當可觀的，尤其是在移植需求持續超過供應的情況下。

Xenotransplantations of animal organs and cells into human patients with life threatening conditions began in the 1960s.

將動物器官和細胞異種移植給患有危及生命疾病的人類患者始於 1960 年代。

These most often come from pigs and nowadays are genetically modified to avoid rejection by the patient.

這些通常來自豬，而且現在經過基因改造，以避免患者排斥。

But even so, pig cells contain porcine endogenous retroviruses in their genome.

但即便如此，豬細胞的基因組中也含有豬內源性反轉錄病毒。

These and other viruses from the host could infect human cells.

這些病毒以及來自宿主的其他病毒可能會感染人體細胞。

Since we know chimerism occurs during translation, developing methods to detect infection rather than chimerism is one of the many things scientists are working on to make xenotransplantation safer and more effective.

由於我們知道嵌合體症會在轉譯過程中發生，是以開發檢測感染而非嵌合體症的方法是科學家們為使異種移植更安全有效而努力的眾多事項之一。

And they're already seeing some results of their efforts in just the last couple of years.

他們在過去幾年中已經看到了一些努力的成果。

The first patient to receive a pig heart and the first to receive a pig kidney both lived for two months after implantation, which might not seem like a lot, but

第一位接受豬心臟移植的患者和第一位接受豬腎臟移植的患者，在植入後都存活了兩個月，這可能聽起來不多，但

這對這類事情來說，是個很大的進步。

If you could clone yourself, what would be the first thing that you do?

如果你可以複製自己，你會做的第一件事是什麼？

Let me know in the comment section below or tell me.

在下面的留言區告訴我，或者直接跟我說。

Click here or click on this one to watch a mystery video that YouTube is going to recommend.

點這裡，或是點這個，就可以看 YouTube 推薦的神祕影片。