title: Letter: Chromosome aberration yields in human lymphocytes exposed to fractionated doses of negative pi mesons.
mesh_terms: D002869:Chromosome Aberrations; D004601:Elementary Particles; D006801:Humans; D066298:In Vitro Techniques; D008214:Lymphocytes / Q000528:radiation effects*; D011882:Radiotherapy, High-Energy / Q000009:adverse effects*