title: [Natural immunity and blood system status of metal workers in relation to age, length of service and occupation].
mesh_terms: D000367:Age Factors; D001790:Blood Physiological Phenomena; D004651:Employment; D006801:Humans; D007113:Immunity, Innate; D008669:Metallurgy; D009787:Occupational Medicine; D013997:Time Factors
vernacular_title: Sostoianie estestvennogo immuniteta i sistemy krovi u metallurgov v zavisimosti ot vozrasta, trudovogo stazha i professional'noĭ prinadlezhnosti.