File:IgG-antibody.jpg

Title: (or description)
Structure of Immunoglobulin G (IgG).

Author: (or citation)
Parker, Nina; Schneegurt, Mark; Tu, Anh-Hue Thi; Lister, Philip; Forster, Brian M. (November 1, 2016). "18.1 Overview of Specific Adaptive Immunity". Microbiology. OpenStax. Houston, Texas.

Modification: Image cropped.

Source: (e.g. internet address)
https://openstax.org/books/microbiology/pages/18-1-overview-of-specific-adaptive-immunity