Abstract: According to embodiments of the disclosure, a method, an apparatus, a device, and a computer-readable storage medium for electronic payment are provided. A method includes: presenting, at a first device, a set of candidate objects in response to a selection of a first entry associated with an order; and triggering, based on a selection of at least one object from the set of candidate objects, a second device associated with the at least one object to present a first reminder message associated with the order, the first reminder message including first description information of the order and second description information of a transaction object associated with the order, the first description information indicating a payment amount associated with the order.

Abstract: A battery pack includes a recess structure and a wire outlet. The recess structure is configured for accommodating a longitudinal beam of a vehicle frame. The wire outlet is formed at the top of the battery pack, and the wire outlet is configured for leading out a wire harness of the battery pack.

Abstract: Provided is a set of viral vectors, comprising: a first viral vector that carries a first nucleic acid molecule encoding an envelope protein, and a second viral vector that carries a second nucleic acid molecule encoding a fusion protein, the fusion protein comprising: a single-chain antibody capable of binding to CD28 or CD3, and a C-terminal domain, comprising a transmembrane region and an intracellular region, of the envelope protein. The C terminal of the single-chain antibody is connected to the N terminal of the C-terminal domain of the envelope protein, and the envelope protein and the fusion protein are in a non-fusion form. Also provided are a method for obtaining a lentivirus and an obtained lentivirus, a method for introducing a lentivirus into an unactivated T lymphocyte, a method for expressing a target gene, a method for obtaining a CAR-T cell and an obtained CAR-T cell, a pharmaceutical composition, and a use thereof.

Abstract: A group of viral vectors including: first viral vector, wherein first viral vector carries first nucleic acid molecule, and the first nucleic acid molecule encodes envelope protein; second viral vector, wherein second viral vector carries second nucleic acid molecule, the second nucleic acid molecule encodes fusion protein, the fusion protein includes single-chain antibody and C-terminal domain of envelope protein, the C-terminal domain of envelope protein includes transmembrane region and intracellular region of envelope protein, the C-terminus of single-chain antibody connects with N-terminus of C-terminal domain of envelope protein, the single-chain antibody targets a specific antigen; first nucleic acid molecule and second nucleic acid molecule are arranged to express envelope protein and fusion protein, and the envelope protein and the fusion protein are in non-fusion form.