#antilepton  the antiparticle of a lepton
  supertype:  #elementary_particle__fundamental_particle__fundamentalparticle__subatomicparticle  a particle that is less complex than an atom; regarded as constituents of all matter
  subtype:  #antimuon__positive_muon  the antiparticle of a muon; decays to positron and neutrino and antineutrino
  subtype:  #antineutrino  the antiparticle of a neutrino
  subtype:  #antitauon__tau-plus_particle  an antilepton of very great mass
  subtype:  #positron__antielectron  an elementary particle with positive charge; interaction of a positron and an electron results in annihilation

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