The tissue shown in the image is?

• A. Bone marrow
• B. Spleen
• C. Lymph node
• D. Liver

Answer: (A)

This tissue is identified by its mixture of hematopoietic cells at multiple maturation stages within a loose reticular framework, often with scattered fat cells and prominent sinusoids. The image shows developing erythroid and myeloid precursors along with a megakaryocyte, all embedded in a delicate stromal network. This pattern is characteristic of bone marrow.

In contrast, liver would show cords of hepatocytes around central veins, and lymph nodes or spleen would display organized lymphoid structures such as follicles or distinct white/red pulp architecture, not a diffuse mix of developing blood cells. The combination of diverse hematopoietic lineages with supportive stroma and absence of other organ-specific architectures points to bone marrow.