Final answer:
A Golgi stain shows the Golgi bodies in a neuron, while a Nissl stain shows the Nissl bodies.
Step-by-step explanation:
A Golgi stain is used to visualize internal structures of a neuron that are not shown by a Nissl stain. The Golgi stain highlights the Golgi bodies, which are a network of vesicles found in nerve cells. These vesicles are involved in the processing and packaging of proteins. In contrast, a Nissl stain stains the Nissl bodies, which are clusters of rough endoplasmic reticulum found in the cell body of a neuron.