[dsign]

I think that getting any kind of practical processing from biological neurons from a mouse or a human is ... well, hard and pointless.

However, the idea of getting biological parts interfacing with silico has lots of applications. For example, it could be used to build cheaper DNA printers where the "printing heads" are genetically modified bacteria. And from there, it would be possible to arrange all sorts of chemical processes using bacterial metabolism. One could for example build sealed bio-batteries with an infinite lifetime, whose DNA is kept mutation-free using a digital master in the embedded digital controller.