By now, the virtues of breastfeeding your baby are well known: Breast milk protects against obesity, allergies, Sudden Infant Death Syndrome (SIDS), and bad teeth, among other health problems.
Sometimes, though, for a variety of reasons, women can't breastfeed. But a couple of scientists in Argentina just may have solved that problem—by genetically engineering a cow to produce human milk.
To achieve this strange feat, a team from the Institute for Biotechnology Research, the National Institute of Agribusiness Technology, and the National University of San Martin harvested human genes carrying two proteins that are present in human milk, but virtually non-existent in cow's milk. They then used the cells to create a genetically modified calf embryo, which they implanted in an adult cow. The calf was born in April, and was named Rosita. (The Telegraph reports that the calf was nearly named after Cristina Kirchner, President of Argentina. Kirchner politely declined the honor, however, asking "What woman would like to have a cow named after her?" Wise words).
[Read more in the Blue Marble blog]