PART ONE: THE DIFFERENT CELL TYPES IN FORMALIN-FIXED, PARAFFIN-EMBEDDED TISSUES EPITHELIAL CELLSEpithelial cells are the most abundant in the body and have many important functions. For example, they cover our skin and line the gastrointestinal tract from top to bottom. They are also the progenitor cell for what is by far the most common type of cancer in humans: the carcinomas. The different ty..
