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.
The secondary immune response occurs the second time (3rd, 4th, etc.) the person is exposed to the same antigen. At this point immunological memory has been established and the immune system can start making antibodies immediately.
The non-specific, first line of defense against a potential pathogen in the immune system. The immune system is the first line of defense against pathogens. The most obvious example is the skin. However, the two main differences between the Innate and Adaptive immune responses are: Innate immunity is non-specific.