title: The fine structure of HNK-1 (Leu7) positive cells. A study using an immunoperoxidase technique.
abstract: The ultrastructural characteristics of HNK-1 (Leu7) positive cells, visualized with a peroxidase labelled anti-mouse IgM serum, were analysed. Our investigation demonstrates: 1) the majority of Leu7 positive cells has a low nuclear/cytoplasmic ratio (N/C), an irregular outline, a well developed smooth endoplasmic reticulum, parallel tubular arrays (PTA) and electron dense granules; 2) the minority of Leu7 positive cells has a high N/C, regular profiles and lacks electron dense granules. The presence of two distinct ultrastructural patterns within Leu7 positive cells may represent: 1) the expression of subsequent stages of cell differentiation; 2) two distinct Leu7 positive cell subpopulations.
mesh_terms: D000911:Antibodies, Monoclonal; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D006801:Humans; D007124:Immunoenzyme Techniques; D007694:Killer Cells, Natural / Q000276:immunology / Q000648:ultrastructure*; D008875:Middle Aged; D010641:Phenotype
chemical_list: D000911:Antibodies, Monoclonal