This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionMouse cholera antibody.png
English: Illustration of a murine anti-cholera antibody with bound carbohydrate antigen. The heavy chain is colored cyan, the light chain is turquoise, and the antigen is shown in van der Waals representation colored by atom type (carbon grey, oxygen red, nitrogen blue). Based on PDB 1F4X
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.