The disclosed invention relates to the unexpected finding of novel steroids which are characterized by a 14,15-cyclopropane ring and a 17 hydroxymethyl group. The teeth of the driving rotor and the driven rotor are configured such that seals between the inlet side and the discharge side of the pump are formed between only the leading surfaces of the teeth of the driving rotor and the trailing surfaces of the teeth of the driven rotor. The authenticator can be a serial numbered item such as a currency bill or note. The unicycle is therefore easier to steer and to balance. Data is acquired from ARP caches that are located within the routers. Both processes allow bone to be rapidly demineralized to a precise and specific desired residual calcium level without sacrificing osteoinductivity.