Fig. 2From: Nanobodies: a tool to open new horizons in diagnosis and treatment of prostate cancerCamelid heavy chain antibodies, unlike conventional antibodies, do not have a light chain and the antigen-detecting part consists only of the variable part of the heavy chain; VHH (Upper). The CDR3 domain of VHH, due to their larger size, allows the detection of cryptic epitopes and haptens, which is not possible in classical antibodies (Lower)Back to article page