Can the equivalence principle survive quantization?

It is well known that Einstein gravity is non-renormalizable; however a generalized approach is proposed that leads to Einstein gravity after renormalization. This then implies that at least one candidate for quantum gravity treats all matter on an equal footing with regard to the gravitational behaviour. Harsh constraints are also placed on any anti-matter gravity theory if one does not wish to violate the conservation of energy. This revised version was published online in August 2006 with corrections to the Cover Date.