hiv versus cancer

Apparently, some scientists in the States have found a "harmless" version of the HIV virus that seeks out and destroys cancerous cells.

"In the laboratory, the scientists took HIV and removed the parts of the virus that causes disease. They then stripped off the virus' outer coat and redressed it with the outer suit of another virus. The new outer coat instead directed HIV to hunt down molecules present on cancer cells."

Link to BBC article.