| abstract |
An isolated antibody or an antigen binding fragment thereof, comprising: a) a heavy chain variable region sequence selected from the group consisting of SEQ ID NO: 34-38; and b) a light chain variable region sequence selected from the group consisting of SEQ ID NO: 39-42, wherein the isolated antibody, or an antigen-binding fragment thereof, binds to a PD-L1 protein that it has the amino acid sequence of SEQ ID NO: 4, and the isolated antibody, or the antigen-binding fragment thereof, is humanized or composed. |