A subpopulation of human tonsillar lymphocytes with mitochondria which are visible by light microscopy.
D003594:Cytoplasmic Granules / Q000648:ultrastructure; D006801:Humans; D008214:Lymphocytes / Q000166:cytology*; D008928:Mitochondria / Q000648:ultrastructure; D014066:Palatine Tonsil / Q000166:cytology*