Abstract: A pyrimidine compound as an AXL inhibitor is provided. The structure of the pyrimidine compound is as shown in general formula I, and the definition of each substituent is as described in the description. The present invention further provides a preparation method for the pyrimidine compound. The pyrimidine compound of the present invention has significant AXL inhibitory activity, and can be used as an AXL inhibitor.

Abstract: Provided are an anti-Claudin18.2 antibody or an antigen binding fragment thereof, a pharmaceutical composition comprising an anti-Claudin18.2 antibody or an antigen binding fragment thereof, and uses thereof. The antibody and Claudin18.2 have significant binding activity and affinity, have efficient in-vitro ADCC cytotoxic activity against a tumor cell, and can be applied in the preparation of an antineoplastic drug.

Abstract: The present invention disclose a Christmas tree, comprising a plurality of trunk units capable of being assembled, wherein the trunk unit is a hollow tubular body; when any two trunk units are connected, the lower end of the tubular body located above is sleeved into the upper end of the tubular body located below; the trunk unit comprises a power connector comprising an upper end connecting portion and a lower end connecting portion, the upper end connecting portion and the lower end connecting portion are respectively arranged at both ends of the tubular body. The present invention can avoid the adverse effects caused by the reverse connection of the positive and negative electrodes, and improve the convenience and safety of the assembly and use of the Christmas tree.