Used in immunological research to study trophoblast glycoprotein (TPBG) function in non-human primates, particularly in cancer and placental biology. The Fc tag enables easy detection and purification, making it valuable for assays such as ELISA, flow cytometry, and immunoprecipitation. Supports development of therapeutic antibodies by serving as a control antigen in binding and neutralization studies. Also used in comparative studies with human TPBG to assess cross-reactivity and model human disease mechanisms in preclinical research.