Abstract: Provided is a fusion protein of human serum albumin or a wild type thereof and human interleukin-2 or a mutation thereof, said fusion protein has a significantly extended in vivo half-life relative to recombinant interleukin-2, can be used alone for treating a tumor, and improves anti-tumor efficacy of an anti-PD-1 antibody or an anti PD-L1-antibody.

Abstract: Transaction processing method, apparatus, device, medium and system are disclosed in the embodiments of the present application. The method includes: acquiring biometric characteristic information of a user; transmitting the biometric characteristic information to a target biometric information server, so that the target biometric information server determines card information of the user according to the biometric characteristic information for feedback; receiving the card information of the user fed back by the target biometric information server; transmitting a transaction request to an authorization server corresponding to the card information, so that the authorization server performs authorization verification on a transaction corresponding to the transaction request; receiving a transaction authorization verification result fed back by the authorization server; and performing the transaction according to the transaction authorization verification result.