Figure 1. Scheme of the idiotypic network and specificity of the AIM2 response.
a) The idiotypic network. An antigen, Ag, is recognized by its antibody Ab1. The Ab1 becomes itself an antigen eliciting the production of anti-antibodies Ab2. This response can be divided into: i) an antigen-non inhibitable group (Ab2α), ii) an antigen-inhibitable group bringing an “internal image” of the antigen (Ab2β), and iii) an antigen-inhibitable group due to steric hindrance with the antigen binding-site (Ab2γ). b) Specificity of AIM2 response. Immunoreactivity of phage expressed AIM2 scFv was tested by ELISA against MB2.8 (used for selection) and 3 others scFv-Fc. MB3.7 is a celiac-derived anti-TG2 antibody while MB6.2 and MBV5B2 are control antibodies using the VH5 gene for VH Chain.