Please find a link to a study published in Chest (the journal of American Chest Physicians) which shows a statistically significant improvement in critically ill patients taking potentised Potassium Bichromate ( & notice the article makes no mention of homeopathy! lol)
http://chestjournal.chestpubs.org/content/127/3/936.full.pdf+html
Yet another piece of evidence suggesting that ultra-dilutions might have a biological effect.
Regards,
Alan