Narrator: This is Science Today. Lysozyme is an antimicrobial protein that's found in high levels in human breast milk, but low levels in the milk of ruminants like goats. In an effort to help treat bacterial infections like diarrhea, which kills millions of children in the developing world, researchers at the University of California, Davis, have genetically modified goats' milk to produce higher levels of lysozyme and successfully treat these infections.
Murray: We've done a lot of work already to show that consuming the milk would be safe in the sense that we fed it to healthy pigs, we fed it to healthy kid goats. So, we know the milk is safe to consume but we still need to do more work on whether, for instance, if we feed the milk before you get sick, will it prevent you from getting disease. We don't know that yet. So, there's still a little bit of work to be done in the pigs — another year or two. And then the next step after that would actually be to try human trials and see if in fact it has the same effect in humans that we see in the pig, which is what we would expect.Narrator: For Science Today, I'm Larissa Branin.