Lymph nodes are essential in histology because they provide insights into the state of the immune system and can indicate the presence of systemic diseases. The histological study of lymph nodes helps in: - Diagnosis: Identifying diseases based on the cellular architecture and presence of abnormal cells. - Staging: Determining the extent of diseases like cancer, which often involves checking for metastasis in lymph nodes. - Research: Understanding the mechanisms of immune responses and the development of immunotherapies.
