A tissue sample is a small piece of biological material taken from a living organism, such as a human or animal. This sample can be collected from various parts of the body, including skin, organs, or tumors, and is used for medical analysis. The examination of tissue samples helps in diagnosing diseases, understanding health conditions, and guiding treatment options. In laboratories, tissue samples are often processed and examined under a microscope. This process is essential in fields like pathology, where specialists study the samples to identify abnormalities or diseases, such as cancer. Accurate analysis of tissue samples is crucial for effective patient care and treatment planning.