Immunogen: Synthetic peptide C-HYEQPTIQIELRQN from an internal region of human TACSTD2 / TROP2 (NP_002344.2). Percent identity by BLAST analysis: Human, Gibbon, Monkey, Bat (100%); Mouse, Panda, Dog, Bovine, Rabbit (93%); Rat, Hamster, Pig, Opossum (86%).