The Japanese word for Japan is æ¥æ¬, which is pronounced Nippon or Nihon and literally means the origin of the sun. The earliest record of the name Nihon appears in the Chinese historical records of the Tang dynasty, the Old Book of Tang.
Primary versus Secondary Immune Response The primary immune response occurs the first time that the immune system comes in contact with the antigen.
primary response. adaptive immunity. body recognizes, remembers, and responds to specific antigens. frequently leaves the host with specific immunologic memory. When foreign antigen is first introduced in the body, a primary antibody response occurs. -IgM antibody. -low titer. -short-lived antibody response.