The team found the most influential factors included the number of cells that developed into early stage embryos, the thickness of the womb lining, and body mass index. (newscientist.com)
Opponents who believe that human life begins the moment a sperm fertilizes a single egg decry the destruction of early stage embryos. (discovermagazine.com)
The virus was also found in fetal stem cells, suggesting that Zika «replicates in [these cells] involved in early stage embryo development,» the researchers explained. (health.com)