According to the International Journal of Sociology and Social Policy, the term was “used as the rationale for permitting human embryo research ” during the first 14 days after conception.
Ajakiri „International Journal of Sociology and Social Policy ” kirjutab, et selle terminiga põhjendatakse„ inimembrüo uuringute lubatavust ” esimese 14 päeva jooksul pärast eostumist.