Human placentation from nidation to 5 weeks of gestation. Part I: What do we know about formative placental development following implantation?

@article{James2012HumanPF,
  title={Human placentation from nidation to 5 weeks of gestation. Part I: What do we know about formative placental development following implantation?},
  author={Joanna L James and Anthony M Carter and Lawrence W Chamley},
  journal={Placenta},
  year={2012},
  volume={33 5},
  pages={327-34}
}
The implantation of the blastocyst and early development of the placenta are crucial for the success of implantation and pregnancy. However, the formative stages of human placental development are largely unknown because of their existence in a 'black box' where access to samples is extremely limited for ethical reasons. In this review we discuss our current knowledge of early placental formation from the time of implantation at 3 weeks of gestation to approximately 5-6 weeks of gestation… CONTINUE READING