Germ-free animals：

Germ-free animals are defined as experimental animals in which no detectable microorganisms are found inside or outside the body using current detection techniques, and which are bred and maintained in a completely sterile environment. Germ-free animals provide a precisely controllable research platform for fields such as microbe-host interactions, immune regulation, metabolic diseases, and new drug development, and are regarded as the "gold standard" for life science research.

Strain Background  

An inbred mouse strain with black coat color and strong adaptability. It has a well-characterized genome and high genetic stability, and is recognized as the "standard strain of laboratory mice." It is the most commonly used inbred strain on the market and is widely applied in the construction of various disease models.

Application Areas  

l Immune mechanism research: Sensitive to Th1-type immune responses, it is commonly used in studies of autoimmune diseases, intestinal immunity, and microbe-immune system interactions.

l Metabolic disease models: Prone to induced obesity, diabetes, and atherosclerosis, it is an ideal model for studying the regulation of metabolism by the gut microbiota.

l Neuroscience: Used to explore the "gut-brain axis" mechanism and elucidate the impact of microbiota on neurological diseases such as autism and Parkinson's disease.

l Gene editing vector: As a common background strain for transgenic and gene knockout technologies, combined with germ-free conditions, it can exclude microbial interference with gene phenotypes.

Germ-Free Model Advantages

Specific microbial communities can be precisely transplanted for targeted studies of microbiota function.

Eliminates interference from endogenous microorganisms on metabolic phenotypes, improving the accuracy of drug screening.

Applicable Scenarios

Gut microbiota function validation, mechanistic analysis of metabolic diseases, gene-microbe interaction studies, and safety evaluation of biologics.