Hydrogen, calcium, and potassium ion-sensitive FET transducers: a preliminary report.
D002118:Calcium / Q000032:analysis*; D006801:Humans; D006863:Hydrogen-Ion Concentration; D011188:Potassium / Q000032:analysis*; D011199:Potentiometry / Q000379:methods
D011188:Potassium; D002118:Calcium