#  Section of a brain organoid 

 



 ![A section of a brain organoid after three months of culture.](/sites/g/files/omnuum10026/files/hsci/files/arlotta_organoids1.jpg)

 

A section of a brain organoid after three months of culture where the green dots are different types of cells revealed by fluorescent proteins, showing its structural complexity. (Credit: Arlotta laboratory)