This cross section through the flight muscles of a dancer damselfly shows in blue the muscle fibers that the fly uses to flap its wings. You can also see the nerve that stimulates these muscles in red ...

This fiery golden wheel is an artery running through the thymus of a monkfish. The thymus is an organ in the lymphatic system that is a nursery for certain immune cells. The artery you can see here ...

This neon network of “branches” is not part of a plant but the egg chamber and breathing tubes of a giant grasshopper. This neon network of “branches” is not part of a plant but the egg chamber and ...