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.
A slice of bread weighs 1 ounce, which is 28.34 grams. An ounce is the smallest standard American measurement of weight and is equal to 1/16th of a pound. Other items or collections of items which weigh 1 ounce include: 28 paper clips, five U.S. quarters, and a compact disc (CD). An ounce is also a measurement of volume. A liquid ounce is an American measurement that is equal to 29.57 milliliters, or 1/8th of a cup. Both liquid and solid ounces are a part of the United States customary units, a set of measurements which were derived from the British Imperial units.