Native tissue

The term "native tissue" does not refer to a specific molecule, protein, or cellular receptor, but rather to tissues as they naturally occur within living organisms, as opposed to engineered or artificial tissues[1][2][6]. Tissues are groups of cells that share a common structure and function, organized into four main types in animals: epithelial tissue, connective tissue, muscle tissue, and nervous tissue[1][2][6]. Each tissue type consists of specialized cells and extracellular matrix and serves different biological roles in the body. While native tissues are essential for organ function and health, "native tissue" itself is not a molecular or biochemical target for therapeutics, but a biological system or context within which specific molecular targets (such as receptors, enzymes, transporters, etc.) may exist. If a user is interested in detailed information about a specific target within native tissue, the target should be specified more precisely (e.g., a particular receptor or enzyme). The term "native tissue" is too broad and non-specific for use as a canonical target in pharmacology or molecular biology.