The gene was injected into a one-celled goat embryo, which was then implanted into the womb of a surrogate mother. After a goat was born that produced the protein in its milk, the herd was expanded by conventional breeding.
Can be a big step forward in advancing wider availability at a lower costs of drugs.

Now if they only had something for cheese breath.

There's just something wrong with the way animals are being genetically altered. Are they 100% sure it's safe. Look at what's happened with cows milk and children developing puberty earlier.There's too many things that can go wrong when you start messing with genetics to alter anything meant to be used by one species to another.

The age of puberty has been dropping for quite a while - several hundred years. That predates hormone treatment of livestock - when I first read about it (when I was about 13 or so), it was attributed to better overall improvements in nutrition and health care.

There is pretty good scientific data that suggests that swine diseases are mutating and jumping to humans. Pigs have been used in various medical procedures for decades.

I think using live animals, and plants, and altering DNA and genetic code is playing with fire.

We won't know if the FDA and phamaceutical companies are unknowingly creating the next plague until we are holding our dead children.

Scares me. Some things MAY be better off left alone.