In the absence of a specific laws dealing strictly with fetal cell xeno-transplantation, such as those in European Union, Russian Federation, and to some degree in the U.S., any dealing with regulatory authorities about fetal cell xeno-transplantation is usually difficult. Although the principle of individualized therapy as a matter between a physician and his patient can be found in laws of some countries, i.e. Mexico, the central government does not respect it. In Switzerland, where fetal cell xeno-transplantation was born, the old regulations disappeared, and what is left amounts to four lines in the Codex.
Four years ago Switzerland, the coutry where zellentherapie was born, banned this therapeutic method.
The regulatory situation in other countries is even worse because there are no laws or regulations regarding fetal precursor cell transplantation, allo- or xeno-, whatsoever.