What is the Purpose of iodine in plotting the distribution of sweat glands?

Iodine is used in the process of plotting the distribution of sweat glands because it acts as a staining agent that highlights the presence of sweat glands in tissue samples. When applied, iodine interacts with the proteins in sweat glands, making them more visible under a microscope. This allows researchers to map their distribution accurately, providing insights into skin physiology and potential abnormalities. Overall, iodine enhances the visualization of these structures for better analysis.