This is what brain synapses look like in 3D
![](https://s.yimg.com/ny/api/res/1.2/uvxNEquzxiODjmFJ9edStw--/YXBwaWQ9aGlnaGxhbmRlcjt3PTk2MDtoPTUyNA--/https://o.aolcdn.com/hss/storage/midas/721ca4333066556405992b7579abe41b/200213388/brain-synapse-3d.jpg)
Many know that brains are inherently complex things; there are trillions of synapses converting chemical and electrical signals in a human mind. However, did you know that even those synapses are very complex? If not, it should be perfectly clear now. German scientists have used a mix of extremely high-resolution microscopes (both electron and fluorescent), mass spectrometry and protein detection to create a super-detailed 3D map of a synapse in a rat's brain. It's almost like a miniscule city -- those dots you see represent 300,000 proteins, and only a tiny portion (the glowing red patch at the bottom) is transmitting chemicals.
Such 3D models aren't just for putting on a show. While scientists are usually focused on individual protein types that could trigger conditions or lead to treatments, digital maps can help them understand how those proteins fit into a greater whole. If nothing else, this rendering is a friendly reminder that recreating the brain is a daunting task.