Allergy is also called allergy, milk allergy is more common in the gastrointestinal tract. According to statistics, the incidence of healthy children ranges from 0.3% to 7%, and up to 3% among allergic children. This is because the child's gastrointestinal tract has not yet matured and the mucous membrane permeability is relatively strong. The larger protein particles in the milk can infiltrate into the mucous membrane. As an antigen, it stimulates the body to produce antibodies, and antigens and antibodies interact to cause allergic reactions.
Typical children are prone to colic symptoms during eating milk or after eating milk. They are crying loudly, pale faces, fists in both hands, legs flexing in the abdomen, bloating, foamy discharge, loose mucous, or loose stools. Bloody, sometimes visible rash or erosion around the anus. If it lasts longer, anemia, dehydration, or even malnutrition can occur. The symptoms disappeared after milk was stopped, and milk appeared again, which is the main feature of the disease.
The following measures are taken to prevent milk allergy:
First, breastfeeding is used first. If for some reason the mother cannot breastfeed, it is best for other nursing mothers to feed them. But this is generally not easy to do.
Second, the milk boiled many times, after high temperature treatment, protein molecular structure changes and lose allergic. However, high temperatures can cause loss of vitamins and minerals.
Three and six months later, due to the gradual maturation of the gastrointestinal function of the baby's gastrointestinal tract, larger protein particles can no longer penetrate into the gastrointestinal mucosa, so it can be naturally relieved. Once the permeability of the intestinal mucosa is increased for some reason, allergic symptoms may occur again and should be noticed.
Fourth, allergic pregnant women and lactating mothers should avoid eating milk and milk products to prevent the impact on the baby.
5. Proper use of some antihistamines, such as ketotifen and astemizole, can help reduce symptoms when taken half an hour before eating.
Nucleic Acid (DNA/RNA) Extraction Kit
1. Introduction
The total viral nucleic acid extraction kit is suitable for extracting total viral nucleic acid from serum, plasma, tissue homogenate and other samples. The kit is based on silica column purification technology, which eliminates the need for toxic phenol-chloroform extraction and time-consuming alcohol precipitation. This product has successfully extracted nucleic acids from hepatitis B A/C, hepatitis C, and norovirus standard. The obtained DNA/RNA can be directly used in a series of downstream experiments such as PCR, RT-PCR, and LAMP.
Notice:
1. The carrier RNA solid must be dissolved in Nuclease Free Water to 1µg/µl before use, and vortex to dissolve. Store in aliquots at -70°C. If you need to store it at -20℃ for a long time, please repackage it according to the number of times of use.
2. Dissolve Proteinase K (20mg/ml): Add Proteinase Dissolve Buffer to dissolve Proteinase K to a final concentration of 20mg/ml. Proteinase K dry powder can be stored at 2-8°C for one year, but dissolved Proteinase K must be stored in aliquots at -20°C. Repeated freezing and thawing of Proteinase K can affect its activity.
3. Buffer VHB must be diluted with 14 ml absolute ethanol before use and stored at room temperature.
4. Buffer RW2 must be diluted with 80 ml of absolute ethanol before use and stored at room temperature.
3. Shelf life
Except for Proteinase K and Carrier RNA, other components of this product can be stored at room temperature (15-25°C) for 12 months, and should be stored at 2-8°C for long-term storage. Proteinase K and Carrier RNA dry powder are transported at room temperature. Please store at -20°C after receiving the test product, and store at -20°C after dissolving.
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