Jenner’s stain is primarily used in the field of hematology for staining blood smears to differentiate various types of blood cells. It is particularly effective in highlighting the morphology of white blood cells (leukocytes), making it easier to identify and classify them under a microscope. This stain is often used in combination with other stains, such as Wright’s stain, to enhance the contrast and detail of cellular components. It is widely applied in clinical diagnostics to detect abnormalities in blood cells, aiding in the diagnosis of conditions like infections, leukemia, and other blood disorders. Additionally, Jenner’s stain is utilized in research settings to study blood cell development and function.