Microbiology When an antigen is administered for the first time to an animal or a human being who has never been exposed to it, the first antibody to develop- A IgG type B IgM type C IgA type D IgE type 💡 Explanation When an antigen is administered for the first time to an animal or a human being who has never been exposed to it, the first antibody to develop- ✓ Correct Answer: B. IgM type