Cyanovirin-N

Cyanovirin-N (CV-N) is a protein produced by the cyanobacterium Nostoc ellipsosporum that displays virucidal activity against several viruses, including human immunodeficiency virus (HIV).

Professor Julian Ma of St George's Hospital, South London, has a project in Kent, England to use genetically modified tobacco plants to produce the Cyanovirin and from this produce a cream which could be used to prevent HIV infection