Abstract: Provided are a CAR-T cell specifically recognizing CD70, and a preparation method therefor. The method comprises expressing a SCFV(Anti CD70)-CD8-4-1BB-CD3? molecule in a T cell. The CAR-T cell has tumor killing activity and may be used for preparing a medication in the treatment of a tumor with the high expression level of CD70 molecules.

Abstract: Disclosed is an ultra-high-power cementing apparatus integrated with remote control, belonging to the field of petroleum equipment. The apparatus includes a loading system, and a secondary beam on which a hydraulic system, a power transmission system, a metering tank, an electrical system, a gas path system, a manipulation system and a mixing system are successively connected from front to rear, wherein a lower portion of the gas path system is provided with a plunger pump that is connected to a high-pressure discharge system; and a lower portion of the electrical system is provided with a manipulation platform, the manipulation system being located above the manipulation platform, and the manipulation system being connected to a remote control system.