Specialized proteins that bind to a pathogen's specific antigen and marks it for destruction are called

Answer: Antibodies

Human body has its own defense mechanism to protect the body from the invading pathogens and one of these are antibodies. They are specialized proteins that binds to antigen’s surface and inactivate them. Once inactivated, the antigens are mark for destruction by macrophages or stimulate the production of proteins that could lyse the pathogens and totally eliminate it.