Not applicable. The term "cynoCD99 / TACTILE-HEK293" refers to a research construct or cell line used in immunological studies, particularly in the context of receptor-ligand interaction assays involving the CD96 immune checkpoint pathway. It is not a chemical substance with traditional industrial or commercial applications. Instead, it serves as a tool in biomedical research to study immune cell regulation, particularly in non-human primate (cynomolgus monkey) models. The HEK293-based expression system allows for the study of TACTILE (CD96) binding interactions with its ligands, aiding in the development of immunotherapies for cancer and autoimmune diseases. Its primary use is confined to laboratory settings for protein interaction analysis and drug screening.