Fetal-like models

The team observed the emergence of 3D embryo-like structures under a microscope in the lab. After about two weeks of development, they began to produce blood (shown here in red) — similar to the development process in human embryos. Credit: Jitesh Neupane, University of Cambridge

Human embryo model grown in lab conditions produces blood cells

Cambridge researchers have created “hematoids,” self-organizing structures from stem cells that mimic early stages of development, including blood stem cells and beating heart cells.