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.
Any subsequent immune response to an antigen is called a secondary response and it has. 1  a shorter lag time, 2  more rapid buildup, 3  a higher overall level of response,  a more specific or better fit to the invading 1  antigen, utilizes IgG instead of the large multipurpose antibody  IgM.