![An artist’s rendition of the diverse cells within an organoid and the balance between different brain regions. Cover image for Renner M, Lancaster MA, et al. EMBO J. 2017. Credit: Beata Mierzwa. An artist’s rendition of the diverse cells within an organoid](https://www2.mrc-lmb.cam.ac.uk/groups/lancaster/wp-content/uploads/sites/12/cache/2017/05/2017-03-13_02-43-50_000/1312339729.jpg)
An artist’s rendition of the diverse cells within an organoid and the balance between different brain regions. Cover image for Renner M, Lancaster MA, et al. EMBO J. 2017. Credit: Beata Mierzwa.
![A section through a whole organoid stained for neurons in green and neural stem cells in red. All cell nuclei are stained in blue. A section through a whole organoid stained for neurons in green and neural stem cells in red. All cell nuclei are stained in blue.](https://www2.mrc-lmb.cam.ac.uk/groups/lancaster/wp-content/uploads/sites/12/cache/2016/04/Organoid2/2630702432.jpg)
A section through a whole organoid stained for neurons in green and neural stem cells in red. All cell nuclei are stained in blue.
![A section through a single lobe of cortical tissue within an organoid. Neurons are in green, neural stem cells in red, and all nuclei are stained in blue. A section through a single lobe of cortical tissue within an organoid. Neurons are in green, neural stem cells in red, and all nuclei are stained in blue.](https://www2.mrc-lmb.cam.ac.uk/groups/lancaster/wp-content/uploads/sites/12/cache/2016/04/Cortex/343768805.jpg)
A section through a single lobe of cortical tissue within an organoid. Neurons are in green, neural stem cells in red, and all nuclei are stained in blue.
![A section through a whole organoid stained for neurons in green and neural stem cells in red. All cell nuclei are stained in blue A section through a whole organoid stained for neurons in green and neural stem cells in red. All cell nuclei are stained in blue](https://www2.mrc-lmb.cam.ac.uk/groups/lancaster/wp-content/uploads/sites/12/cache/2016/04/Organoid1/1673592488.jpg)
A section through a whole organoid stained for neurons in green and neural stem cells in red. All cell nuclei are stained in blue
![A whole organoid imaged in bright field. Note the large lobe of cortical tissue and the overall large size of the organoid reaching approximately 1 cm in length. A whole organoid imaged in bright field. Note the large lobe of cortical tissue and the overall large size of the organoid reaching approximately 1 cm in length.](https://www2.mrc-lmb.cam.ac.uk/groups/lancaster/wp-content/uploads/sites/12/cache/2016/04/Brightfield/2203087117.jpg)
A whole organoid imaged in bright field. Note the large lobe of cortical tissue and the overall large size of the organoid reaching approximately 1 cm in length.