R. Velásquez

Catalytic hydrogenation of leukotriene B4 enhances sensitivity and specificity of gas chromatography-tandem mass spectrometry techniques and enables simultaneous analysis with cysteinyl leukotrienes in biological fluids.

J. Frölich, J. Fauler, F. Gutzki, 1996, Analytical biochemistry.

Ion-pair extraction of histamine from biological fluids and tissues for its determination by high-performance liquid chromatography with fluorescence detection.

D. Tsikas, C. Toledano, G. Brunner, 1993, Journal of chromatography.

Analytical capillary isotachophoresis of bis(2-ethylhexyl) hydrogenphosphate and 2-ethylhexyl dihydrogenphosphate

D. Tsikas, G. Brunner, R. Velásquez, 1993 .

026 Determination of histamine in food by combined ion-pair extraction and reversed-phase HPLC with fluorescence detection

D. Tsikas, G. Brunner, R. Velásquez, 1992 .

Helicobacter pylori produces histamine and spermidine.

D. Tsikas, J. Frölich, G. Brunner, 1996, Zeitschrift für Gastroenterologie - German Journal of Gastroenterology.