Abstract: The present disclosure provides the use of BAZ1B_K426hy in the preparation of a product for tumor detection and belongs to the field of biotechnology. The present disclosure further provides a group of immunogenic polypeptides, including polypeptide A and polypeptide B. An anti-BAZ1B_K426hy polyclonal antibody is prepared by conducting mixed immunization on an animal with the immunogenic polypeptide. The polyclonal antibody can specifically recognize an endogenous protein BAZ1B_K426hy by enzyme-linked immunosorbent assay (ELISA)/Dot blot/Western blot, which is used for preparation of detection products for tumors and Williams syndrome.

Abstract: A method for rapidly detecting pesticides based on thin-layer chromatography (TLC) and enzyme inhibition principles. The method includes the following steps: cutting a TLC plate into a rectangle, and using one end of the rectangle to contact a sample extract to form a pesticide residue separation area; covering the other end of the rectangle with a small piece cut from filter paper or glass fiber and fixing on a piece of enzyme inhibition reaction test paper to form a pesticide enrichment area; pasting a side of the enzyme inhibition reaction test paper away from the pesticide residue separation area with a piece of filter paper immobilized with a chromogenic agent to form a substrate color development area; and performing color reaction.

Abstract: A removable dual gold marker implantation device with minor damage comprises a gold marker and a puncture needle, the gold marker is arranged in the needle barrel of the puncture needle when in use; the gold marker comprises a gold marker head and a connecting wire connected with the gold marker head; the gold marker head comprises a first gold marker, a connecting part and a second gold marker connected in sequence. The disclosure reduces the damage to the body when removing the gold marker, and the dual gold marker structure makes the implantation of multiple gold markers at the same time possible and reduces the number of times of implantation and improves the efficiency.

Abstract: A gold marker recovery device for radiotherapy positioning and its using method comprises a positioning gold marker and a recovery clamp, the positioning gold marker comprises a gold marker body and an elastic fixed structure, the elastic fixed structure comprises a fixed segment, an extending segment and a spiral segment connected in sequence; the fixed segment is embedded in the gold marker body so that the fixed segment is closely connected with the gold marker body, A magnetic ball is arranged at one end of the gold marker body away from the extending segment; the recovery clamp comprises an operating handle, the rear end of the operating handle is connected with an outer sheath tube in a hollow structure, and the outer sheath tube is connected with a zipper for driving the clamp to open and close.

Abstract: A gold marker recovery device for radiotherapy positioning and its using method comprises a positioning gold marker and a recovery clamp, the positioning gold marker comprises a gold marker body and an elastic fixed structure, the elastic fixed structure comprises a fixed segment, an extending segment and a spiral segment connected in sequence; the fixed segment is embedded in the gold marker body so that the fixed segment is closely connected with the gold marker body, A magnetic ball is arranged at one end of the gold marker body away from the extending segment; the recovery clamp comprises an operating handle, the rear end of the operating handle is connected with an outer sheath tube in a hollow structure, and the outer sheath tube is connected with a zipper for driving the clamp to open and close.

Abstract: A removable dual gold marker implantation device with minor damage comprises a gold marker and a puncture needle, the gold marker is arranged in the needle barrel of the puncture needle when in use; the gold marker comprises a gold marker head and a connecting wire connected with the gold marker head; the gold marker head comprises a first gold marker, a connecting part and a second gold marker connected in sequence. The disclosure reduces the damage to the body when removing the gold marker, and the dual gold marker structure makes the implantation of multiple gold markers at the same time possible and reduces the number of times of implantation and improves the efficiency.