Stem cell technology has advanced rapidly over the past decade, with the latest development being the ability to grow organoids – or “mini brains” – in bodies of rats or mice.
Scientists have reported that these organoids were able to survive for up to two months, and were connected to the animals’ circulatory and nervous systems, transferring blood and neve signals between the implanted human cells and its animal host. The organoids were shown to respond to stimuli in a similar way to that of a human brain.
