SEARCH Articles Figures Tables Biological activity measurements Biological activity measurements accuracy Biological activity measurements precision Biological activity measurements sensitivity Biological activity measurements specificity Biological effect, toxicity measurement Biological half-life measurement Biological particles measuring system Biology isotope ratio measurements Electrodes for measurements in biological fluids H2S measurement in biological samples Hydrogen sulphide measurement, in biological samples Isotope Ratio Measurements of Biological Systems Isotope ratio measurements biological samples Measured biological system Metabolic measures, biological monitoring Time-Resolved Measurements of Biological Processes