Despite numerous studies, the actual cause of the inflammatory bowel diseases remains elusive. It is likely, however, that these chronically recurring episodes of inflammation in the human bowel are related to a complex interaction between various environmental factors and a hereditary predisposition for these diseases.
Blend and Combination Fabrics. Blend and combination fabrics are often used to combine the desirable properties of two fibers, reduce cost, and enhance appearance. The fiber content labels do not differentiate between blends and combination yarns and fabrics. It is often assumed that they are blend fabrics.
Examples of combination products where the components are packaged together (21 CFR 3.2(e)(2)): 1  Drug or biological product packaged with a delivery device. 2  Surgical tray with surgical instruments, drapes, and lidocaine or alcohol swabs.