Question: Identify the structure
Answer: Section shows, on the right side, active fibroblasts with oval nuclei and abundant densely staining cytoplasm surrounding a paraffin pellet, which has been extracted during slide preparation. On the left side (nearest the oval-shaped blood vessel), less active fibroblasts with elongate nuclei and thin strands of cytoplasm can be seen. Other cells are also present. Not all cells are identifiable.