Study shows that tea tree oil inhibits H1N1 virus

I know a lot of people are looking for natural ingredients to address the H1N1 (swine) flu, so it was interesting to read this news...
The Department of Microbiological and Gynecological Sciences at the University of Catania, Italy, let the world in on their recent results testing Melaleuca alternifolia essential oil (tea tree oil, or TTO) on H1N1 virus. It's a technical publication, but here's a bit from their abstract:

TTO and some of its components (the terpinen-4-ol, the terpinolene, the alpha-terpineol) have an inhibitory effect on influenza A/PR/8 virus subtype H1N1 replication at doses below the cytotoxic dose.

That last bit seems to support that tea tree oil inhibits the virus at concentrations that don't hurt your own cells.