Autoimmunity. The immune system is a complex set of organs, cells, proteins and other substances that function to prevent infection. Primary immunodeficiency diseases are characterized by abnormalities in specific components of the immune system that lead to an increased susceptibility to infection.
How to Measure Ounces. Ounces are a measurement of mass or weight, and as such, you should use a scale when measuring ounces for a recipe, experiment, or similar procedure. In contrast, fluid ounces are a measurement of volume, so they are measured in a different manner. Note that there are also ways to estimate mass in ounces if precision is not necessary, and if required, you can easily convert a few other units of measurement into ounces.
In the imperial system, stone and pound are well known units of measurement of weight (ounce is another such unit). Let us start with ounce as it is the smallest of the three to understand stone and pound. One ounce is one sixteenth of a pound, which means 16 oz= 1 lb (pound) and 1 oz=28.35g.