And you can see this looks a bit like a chef's hat, but actually that's an assault, the one in blue.

You can train a fly to avoid an odor, shown here in blue, if you pair that odor with a shock.

Under those conditions, the FOXO protein in blue has gone into the nucleus that little compartment there in the middle of the cell and it's sitting down on a gene binding to it.

Russell's books should be bound in two colours, those dealing with mathematical logic in red and all students of philosophy should read them those dealing with ethics and politics in blue and no one should be allowed to read them.