Reverse-phase high-performance liquid chromatography (HPLC) equipped with fluorescence detection was used to measure peripheral concentrations of tryptophan (Trp), serotonin (5-HT), and ...

The RPLC-MS analysis successfully identified 90 circulating metabolites—including 14 of microbial origin—and demonstrated ...

The Nature Index 2025 Research Leaders — previously known as Annual Tables — reveal the leading institutions and countries/territories in the natural and health sciences, according to their output in ...