If the actual cost is higher than the fixed cost, the cost variance is unfavorable. For example, your standard fixed overhead cost is $3 per unit. If your actual fixed overhead cost is $4 per unit, you have an unfavorable variance of $1.
The major histocompatibility complex and its functions. The function of MHC molecules is to bind peptide fragments derived from pathogens and display them on the cell surface for recognition by the appropriate T cells.
Structure and Function of the Major Histocompatibility Complex (MHC) Proteins. When disease associated proteins occur in a cell they are broken into pieces by the cells proteolytic machinery. Cell proteins become attached to antigen fragments and transport them to the surface of the cell, where they are presented to the bodies defence mechanisms.