Preethi Chander,
http://www.nature.com/news/human-embryos-grown-in-lab-for-longer-than-ever-before-1.19847 http://www.nature.com/news/human-embryo…
http://www.nature.com/news/human-embryos-grown-in-lab-for-longer-than-ever-before-1.19847 http://www.nature.com/news/human-embryo…
Human embryos grown in lab for longer than ever before : Nature News
Human embryos grown in lab for longer than ever before : Nature News
Human embryos grown in lab for longer than ever before : Nature News