In 2001, researcher Brian Kaspar in his lab noticed that the virus called AAV, which is often been used in gene therapy experiments, had an unusual property.
One is Leo Scheffczyk, an aged theologian from Munich, the other, Walter Kaspar, at present number two in the Vatican department which deals with the separated Christian Churches.
Kaspar is a likeable moderate who gets on well with his Protestant and Orthodox colleagues and will now either have to be given the top job in his department or shunted into another important Vatican post.