title: A contribution to the ultrastructural study of retinoblastomas.
mesh_terms: D002467:Cell Nucleus; D003593:Cytoplasm; D005134:Eye Neoplasms / Q000473:pathology*; D006801:Humans; D008854:Microscopy, Electron; D009336:Necrosis; D012175:Retinoblastoma / Q000473:pathology*