Semen parameters in a fertile Swiss population.

Background: The aim of this prospective study was to analyse the different sperm parameters of fertile Swiss men. To date there are no data regarding the quality of spermatozoa of fertile Swiss men.

Methods: We measured the ejaculates (pH, volume, concentration, motility, viability, morphology) of 34 men using strict inclusion criteria.

Surplus embryos in Switzerland in 2003: legislation and availability of human embryos for research.

Legislation influences the availability of embryos for research. The law in Switzerland, and in some other European countries, is restrictive concerning medically assisted reproduction and stem cell research. Swiss law prohibits the creation of embryos for research purposes.