fifty formalin-fixed and paraffin-embedded retinoblastoma specimens and five normal human eyes were studied with the monoclonal anti-leu-7 antibody , directed against the hnk-1 carbohydrate epitope that is shared by human natural killer cells and many neuronal , glial and neuroectodermal cells .
C0035335
retinoblastoma
C1518272
neuroectodermal cells