this is good news indeed, ek, as i have always wondered about CS and hiv. in america i could go to jail for doing what you have done. the doctors dont want anyone stepping on their cash cows.
question - how are you preparing such high concentrations of CS(ppm)? are you afraid that you might turn someone blue with larger particles? it might sound silly because it would be better to be blue than be dead, i would think. but still, in america, you can save someones life and they can sue you for doing so! dont ask me why. greed, i guess.