A: The grafting method is suitable for subcutaneous (plugging). Cut the rootstock 10 to 20 cm from the ground, and cut the cut with a knife. The lower end of the scion is 3 to 4 cm long and the horse-shaped bevel is cut. The left, right, and right sides of the scion are three-knife-shaped, and the small-sized bevel is 0.2-0.3 cm long. The upper surface and the corresponding part of the large surface are gently peeled off with the knife. The green tender skin is exposed. After the scion is cut, it is included in the mouth to be inserted. It is better to have 3 to 5 buds on the scion. It should not be too long. Use a grafting knife to cut and cut the flattened rootstock, deep into the xylem, gently pry open the cortex, then insert the cut scion, and the large oblique face is close to the xylem, and the inclined surface is white 0.2-0.3 cm. The rootstock with a diameter of 2 to 3 cm can be inserted into 2 to 3 sciones. Tightly fasten the plastic strip with a large elasticity of about 3 cm. In order to prevent insects and moisturizing, you can also put on a plastic bag, and tie the lower mouth with a string. After picking up the leaves, pick up the holes and tear them in time.
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Extraction Kit Magnetics Bead Method
This standard specifies the terms and definitions, classification, technical requirements, test methods, identification, labels and instructions for use, packaging, transportation and storage of nucleic acid extraction kits (magnetic beads method) (hereinafter referred to as "kits"). This standard It is suitable for extracting and purifying human genomic nucleic acid and its fragments from various clinical samples such as serum, plasma, whole blood, cerebrospinal fluid, milk, saliva, urine, sputum, swab, tissue or paraffin-embedded tissue by magnetic bead method , Pathogen nucleic acid kit. Pathogen nucleic acid includes deoxyribonucleic acid (DNA), ribonucleic acid (RNA), etc. This standard does not apply to nucleic acid extraction reagents contained in closed systems that cannot extract nucleic acid extraction products for detection.
This kit uses magnetic beads with unique separation function and a unique buffer system to separate and purify high-quality virus from serum, plasma, lymph, cell-free body fluid, cell culture supernatant, urine or various virus preservation solutions DNA/RNA. The uniquely embedded magnetic beads have a strong affinity for nucleic acids under certain conditions, and when the conditions change, the magnetic beads release the adsorbed nucleic acids, which can achieve the purpose of rapid separation and purification of nucleic acids. The whole process is safe and convenient, and the extracted viral DNA/RNA has high yield, high purity, stable and reliable quality, and is especially suitable for automated extraction of high-throughput workstations. The nucleic acid purified by this kit can be applied to various routine operations, including RT-PCR, fluorescence quantitative PCR and other downstream experiments.
Nucleic Acid Lsolation Reagent Kits,Dna Purification Kit,Viral Rna Extraction Kits,Nucleic Acid Extraction Reagents
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