div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=a-fluorescence-test-for-serotonin-and-other-tryptamineshtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: A Fluorescence Test for Serotonin and Other Tryptamines loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader036vdocumentssitereader036viewer2022081812575068001a28ab0f07ae2217html5thumbnails1jpg width=140 height=200 divp© 1953 Nature Publishing Grouppdiv