Ключевые слова: anatomy, biology, biopsy, bladder, cell, cellular, connective, eosin, epithelial, epithelium, health, healthy, hematoxylin, highscale, histology, human, medical, medicine, microscopic, microscopy, organism, photomicrograph, research, science, stain, structure, study, surface, tissue, transitional, urethra, urinary,