Applications of sdAb In terms of the unique properties of small size, high stability, and outgoing solubility, single domain antibody enables researchers and scientists to advance in a variety of fields, which including but not limited to: The study of protein structure, aggregation and activity regulation The identification and targeting of hapten, bacteria, phages, fungi, and protozoans The detection and neutralization of virus The identification and detoxification of toxin For high-resolution imaging applications [such as multiphoton imaging, nuclear imaging conjugated, and Near-infrared (NIR) imaging]