From the website:
Welcome to the Molecular Expressions Photo Gallery. Our portfolio of galleries contains thousands of full color photomicrographs (photographs taken through a microscope) and digital images selected from our many image collections.
It is very easy to view examples from any of our collections. Simply pick the button below that describes the collection of your interest, and you will link to a summary of that collection that includes information about the collection as well as several example photomicrographs.