The many trails we have followed on this illusive stock seem to have reached AMDL, Inc. & Provista/GCDx- both not publicly traded. However, there were other companies which figured prominently at one time or another that were.
Who's buying up all the remaining retail that they can? - probably the 5-10 million share trades are the Takeover Group. The less stock remaining, the stronger their position will be when things do turn around.