What is the meaning of "1*07:01" in HLA-DRB1*07:01? - (Dec/24/2018 )

There is also HLA-II, II stands for? Thanks!

HLA is an antigen in blood. The 07:01 numbers indicate the allele. This is one of the alternative names for HLA class II histocompatibility antigen, DRB1-7 beta chain

 thank you very much!