Quantification of cyclic AMP and cyclic GMP levels in Krebs-Henseleit solution by LC-MS/MS: application in washed platelet aggregation samples - Nash, Charles Elliot Serpellone; Antunes, Natalícia J.; Silva, Weverton Castro Coelho; Campos, Rafael; De Nucci, Gilberto (Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences, 2022)