Objective.Protein tyrosine phosphatase non-receptor type 22 (PTPN22) is a member of the PTPs that negatively regulate T-cell activation.

• 目的：蛋白酪氨酸磷酸酶非受体型22（Protein tyrosine phosphatase non-receptor type 22，PTPN22）是T细胞激活的抑制性调节分子。