# Uncovering the hidden origins of the placenta

Source: [Biology News - Evolution, Cell theory, Gene theory, Microbiology, Biotechnology](https://phys.org/news/2026-11-uncovering-hidden-placenta.html) · 2026-11-12 · Life
Page: https://themorning.science/story/uncovering-the-hidden-origins-of-the-placenta-a9ac05438891a42b
Kind: research · Impact: medium

## In brief

- An embryo attaches to the uterine wall roughly six days after fertilization, a stage called implantation, when it begins to build the body and placenta.
- Implantation is the stage of life scientists know least about.
- It is also the stage when most pregnancies are lost.

## Why it matters

Implantation is poorly understood and is when most pregnancies are lost, so research into its origins could eventually inform work on pregnancy loss and reproductive health.

## Coverage

- [Uncovering the hidden origins of the placenta](https://phys.org/news/2026-11-uncovering-hidden-placenta.html) — Biology News - Evolution, Cell theory, Gene theory, Microbiology, Biotechnology, 2026-11-12

Tags: placenta, implantation, embryology, pregnancy loss, evolution

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Brief generated by AI (claude-haiku-5-5) from the reporting listed under Coverage. Headlines belong to their publishers. The Morning Science – https://themorning.science