The stain shown in the image is?

• A. Giemsa
• B. Hematoxylin and Eosin
• C. Wright
• D. Papanicolaou

Answer: (A)

Giemsa is a Romanowsky-type stain used on blood smears and bone marrow to highlight cellular detail and intracellular organisms. It gives dark blue‑purple nuclei and a range of blue to pink hues in the cytoplasm, making parasites inside red blood cells and the fine nuclear chromatin easy to see. The image’s strong blue‑purple nuclear detail with contrasting cytoplasm matches the staining pattern you’d expect from Giemsa, especially for visualizing things like malaria parasites in blood smears. The other stains are oriented toward tissue sections or epithelial cytology and would show different color contrasts (for example, H&E with pink cytoplasm and blue nuclei, Pap with distinct epithelial cell features), so they don’t fit the appearance as well.