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 Iron in tissues is stained with which of the following stains? and explain in detail?
Iron pigment appears as a coarse, golden, granular pigment lying within the cell's cytoplasm. It can be visualized in tissues by the Prussian blue histochemical reaction, in which colorless potassium ferrocyanide is conveed by iron to blue-black ferric ferrocyanide. Ref: Robbins, 8th edition, Chapter 1.