We've engineered a variety of barnyard animals to produce human proteins, so is it any surprise we can do the same trick in plants? Biolex uses its LEX System and Plantibodies technologies for harvesting therapeutic human proteins from Lemna, an aquatic plant, and other species of flora. The transgenics company is developing alpha interferon-2b, which has antiviral properties, along with a human growth hormone and four other plant-harvested human proteins. Biolex has partnered with Debiopharm, Centocor, and Bayer to develop therapeutic proteins.