Listen to part of a lecture in a biology class.

I'm sure most of you know that we've been able to extract certain compounds from plants for use in medicine, um compounds like proteins. Proteins from some plants can be used in medicines as antibodies and vaccines. And we can even cause some plants to produce certain proteins by incorporating DNA into the plant cells, usually in the leaves. We then extract the proteins to use as antibodies. However, we've never been able to produce enough protein to make the process worthwhile. It hasn't been practical until now.

Now it appears that it is possible to get a large amount of usable protein from plants. Some researchers have recently succeeded in doing this by using plant seeds to produce these proteins, rather than the leaves or the other parts of the plant.

Now, there are a number of advantages to getting protein from plant seeds to produce antibodies, but we have to be sure that these proteins are just as effective as human proteins, and so far, the research has shown that they are. That antibodies produced from plant seed proteins are effective in humans, which is great, because typically antibodies for vaccines and medicines too, are produced from microorganisms like yeasts or bacteria, and it's rather complicated process.

OK, so what makes plant seeds good production units? Well, for one thing, there's lots of them, right? One plant can produce a lot of seeds. And then there's the issue of storage. Seeds can be stored for long periods of time, and the protein retains its effectiveness.

Now, that's not true with other parts of the plant, leaves, for instance, you can't store them very long, which means that you have to get that protein out right away, as soon as it's produced. But using plant seeds as production units allows you to isolate the protein whenever you need it. And you can transport seeds all over the world, even the places where refrigeration might be a problem, not so for yeasts or bacteria.

But with seeds, it seems quite possible that will be able to supply vaccines to places that need them. Whereas before, transporting and preserving these products over long distances simply wasn't feasible.

And another major benefit of extracting plant proteins for medical use, it's cost-effective. Unlike the production of proteins for medicinal purposes using yeasts or bacteria like insulin, which is a vital protein used in medications, extracting protein from seeds doesn't require high-tech production labs with all kinds of equipment.

And since refrigeration is not crucial for maintenance or transport, it's just much less expensive to store and maintain plant seeds than other sources of protein. We estimate the total production cost to be ten to 100 times lower.