You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is Kupffer cells are found in and explain in detail?
Ref Robbins 8/e p834; 7/e p79;9/e p102 Kupffer cells, also known as stellate macrophages and Kupffer-Browicz cells, are specialized macrophages located in the liver, lining the walls of the sinusoids. They form pa of the mononuclear phagocyte system.