[Device for determination of pH of the secretion of the upper respiratory tract mucosa].
D006801:Humans; D006863:Hydrogen-Ion Concentration; D009297:Nasal Mucosa / Q000378:metabolism*; D010036:Otolaryngology / Q000295:instrumentation*
Ustroĭstvo dlia opredeleniia pH sekreta slizistoĭ obolochki verkhnikh dykhatel'nykh puteĭ.