Astudent examines microscope slides containing different types of epithelial tissue. what is the most direct way to differentiate between types of epithelial tissue? a) epithelial tissue types may be identified by differences in dna. b) types of epithelial tissue are distinguished by different microscope staining techniques. c) different epithelial tissue may be identified by the presence or absence of a nucleus and other organelles. d) different types of epithelial tissue may be identified by the shape and overall structure of the cells that make up the tissue.