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Intradermal injection of cows
The drug solution is injected between the epidermis and the dermis and used for allergy tests. The site is selected on the neck or tail. At the time of injection, squeeze the skin with your left hand and hold the syringe in the right hand to make the needle pierce into the skin at a 30 degree angle to the skin. Slowly inject the liquid and show a small papule-like uplift at the injection site. After removing the needle, it is no longer disinfected or oppressed. The injection was more laborious, indicating that the injection was correct. If it feels easy to inject, it means that it is under the skin and the needle should be re-punctured.