Economic growth

Biology

Gene

Induced pluripotent stem cell

Embryonic stem cell

Embryoid body

Economics

Embryo

Cell biology

Genetics

Regenerative Medicine

Research using human embryos and embryoids has expanded in recent years due to technological advances. Surveying laws and guidelines among the top research and development (R&D) investing nations highlights existing barriers to expanding this area of research. Of the 22 nations surveyed, we found 12 countries with a 14-day limit, one with a seven-day limit, five with prohibitions and four without national laws or guidelines that limit or prohibit human embryo research. Sixteen national laws or guidelines define an embryo or related entities, with five nations limiting human embryoid research. Other laws are ambiguous in relation to embryoid research, leave unanswered questions regarding what research is permitted or restricted and need additional clarity for researchers.

National Human Embryo and Embryoid Research Policies: A Survey of 22 Top Research-Intensive Countries