Scientists have for the first time identified a protein in breast milk that neutralises HIV and may protect babies from acquiring the virus from their infected mothers. The protein, called Tenascin-C or TNC, had previously been recognised as playing a role in wound healing, but had not been known to have antimicrobial properties. The discovery could lead to potential new HIV-prevention strategies. Researchers at Duke University Medical Center found the TNC protein in breast milk binds to and...