This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Histamin Histamine.svg validSVG de Struktur von Histaminbr Structure of histamine own NEUROtiker Own work all rights released Public domain thumb left Histamine
Page 2023 Free-images.com. All images are Public Domain