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12 bizarre examples of genetic engineering

By: Laura Moss on Oct. 27, 2010, 12:30 p.m.
eggs

Photo: Valentyn Volkov/iStockphoto

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Medicinal eggs

British scientists have created a breed of genetically modified hens that produce cancer-fighting medicines in their eggs. The animals have had human genes added to their DNA so that human proteins are secreted into the whites of their eggs, along with complex medicinal proteins similar to drugs used to treat skin cancer and other diseases.

What exactly do these disease-fighting eggs contain? The hens lay eggs that have miR24, a molecule with potential for treating malignant melanoma and arthritis, and human interferon b-1a, an antiviral drug that resembles modern treatments for multiple sclerosis.