First fetus-to-fetus transplant demonstrated in rats

I read the first 4 words and my mind worryingly filled in the rest.

This was what was conceived in my mind.

First fetus-to-fetus transplant demonstrated in humans.

What is the point of any fetus-to-fetus transplants on any member of the animal kingdom.

In the name of science!

I used to keep 4 pet rats. They are wonderful intelligent pets.

After a few years all 4 of my rats started to develop huge cancerous lumps on their little bodies. My vet said it was cancer and they all needed to be euthanised.

He also told me that over the past 150 years since rats have been used in laboratories the general population of shop bought rats are linked via DNA and this is why shop bought rats are likely to be infected with cancers. He said he sees this all the time.

How about we get hold of these rat scientist and introduce some cancer in their big human bodies to see how they like it!