TEM plays a crucial role in histology because it enables the examination of cellular and subcellular structures in great detail. This is especially important for: - Identifying Organelles: TEM can reveal detailed structures of organelles such as mitochondria, endoplasmic reticulum, and Golgi apparatus. - Studying Disease Mechanisms: It aids in understanding pathological changes at the cellular level, which is vital for diagnosing diseases like cancer and neurodegenerative disorders. - Research and Drug Development: TEM helps in the understanding of cellular processes and the effects of new drugs on cells.