[jiang]

Dear teachers,

I have two questions to ask:

No.1

Horses are the principle means of transportation. I can also use "transport'. Is that right?

No.2
He told me he had just had a kidney __________. (transplant)
I think I have two choices.

The first one is :
He told me he had just had a kidney transplant. This is emphacizes it is not other organ transplant.

The second one is:
He told me he had just had a kidney transplanted. This emphacizes the fact that he asked some people (doctors) to transplant his kedney. Is that right?

Looking forward to hearing from you.
Thank you in advance.

Jiang