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.
PDB api EBI. Multidomain proteins alpha and beta Serpins Serpins Serpins Antitrypsin alpha EBI api November Antitrypsin alpha Files uploaded by Nichalp's script
Page 2023 Free-images.com. All images are Public Domain