Antibody molecules, or “immunoglobulins”, have been recognized only in vertebrates and all are found to have a fundamentally similar structure consisting of two heavy and two light peptide chains.

This happens in the first 30 minutes after a living Raji B cell comes into contact with the dye-labelled antibody OFA: The yellow signal comes from the protein actin; it shows how protrusions of ...

Caption Structure of the variable domains of the Cv2.1169 antibody (purple) in complex with the S protein domain involved in SARS-CoV-2 receptor binding (receptor binding domain or RBD in yellow ...