PDX model , full name Patient-Derived Tumor Xenograft (PDX) model, is a tumor model constructed by transplanting tumor tissue from tumor patients into immunodeficient mice and allowing the tumor tissue to grow in the mice. This model has not undergone any artificial culture, so its biological characteristics are more complete and more similar to clinical practice. It is considered to be the best tumor animal model at this moment. PDX Model Establishment Process The establishment of PDX. a Showing the establishment process of PDX. b Showing the factors affecting the engraftment rate and the categories of PDX mice[1] The steps to build a PDX (Patient-Derived Xenograft) model usually include the following: 1. Prepare tumor tissue specimens. First, tumor tissue needs to be obtained from the patient. These tissues can be cut into 2 to 3 mm cubic fragments or made into single cell suspensions. Tumor specimens need to be washed
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