Jenner's Stain (10%) is employed to stain wheat-rye hybrid strains, enabling the simultaneous visualization of bands on both the rye and the wheat B genome and 4A chromosomes [1]. This stain is also effective in highlighting the pigmented bodies of tertian fever and the crescent bodies of mstivo-autumnal fever in malarial blood [2]. When used, Jenner's Stain colors the nuclei light blue and the cytoplasm light pink. The staining process involves flooding the specimen with Jenner's Stain for approximately three minutes, followed by washing with gentle agitation in distilled water until the specimen achieves a pink hue [3].