There has been a number of attempts to replicate Jacques Benveniste's results relating to the "water memory". Wikipedia lists many of them.
One of those attempts is the "Belfast study".
- P. Belon, J. Cumps, M. Ennis, P. F. Mannaioni, M. Roberfroid, J. Sainte-Laudy, F. A. C. Wiegant, Histamine dilutions modulate basophil activation, Inflammation Research, April 2004, Volume 53, Issue 5, pp 181-188
It seems to indicate that there is, indeed, something going on even with high dilutions (10–30 – 10E–38 M):
In 3 different types of experiment, it has been shown that high dilutions of histamine may indeed exert an effect on basophil activity. This activity observed by staining basophils with alcian blue was confirmed by flow cytometry. Inhibition by histamine was reversed by anti-H2 and was not observed with histidine these results being in favour of the specificity of this effect We are however unable to explain our findings and are reporting them to encourage others to investigate this phenomenon.
In 2010, six years later, Ennis' point of view is still that:
(...) there appears to be some evidence for an effect – albeit small in some cases – with the high dilutions (...)
- Source: Ennis, Madeleine, "Basophil models of homeopathy: a sceptical view". Homeopathy (Elsevier Ltd) 99 (1): 51–56. doi:10.1016/j.homp.2009.11.005. PMID 20129176, via Wikipedia
I'm specifically referring to the Belfast study and Madeleine Ennis, because she describes herself as a skeptic and I rarely see that study mentioned on skeptic's websites.
So, doesn't that mean we might have missed something - that water memory might exist (maybe only under some circumstances) and, thus, that homeopathy might really work (again, under some specific circumstances)?