title: The mystery is solved--CatSper is the principal calcium channel activated by progesterone in human spermatozoa.
authors: Reproductive and Developmental Biology, Maternal and Child Health Science Laboratories, Centre for Oncology and Molecular Medicine, Ninewells Hospital, University of Dundee, Dundee, Scotland DD1 9SY, UK. c.barratt@dundee.ac.uk
authors: Christopher L R
authors: CL
authors: Barratt