A fat quarter of fabric is a one-fourth yard cut that usually measures 18 x 22. To create a fat quarter, cut a half-yard of fabric -- 18 along the fabric's lengthwise grain -- then cut that piece in half at its midpoint as illustrated.
An antibody (Ab), also known as an immunoglobulin (Ig), is a large, Y-shape protein produced by plasma cells that is used by the immune system to identify and neutralize pathogens such as bacteria and viruses. The antibody recognizes a unique molecule of the harmful agent, called an antigen, via the variable region.hough strictly speaking, an antibody is not the same as an immunoglobulin; B cells can produce two types of immunoglobulins-surface immunoglobulins, which are B cell receptors; and secreted immunoglobulins, which are antibodies.
Immunoglobulin E (IgE) is an antibody that is produced by the bodyâs immune system in response to a perceived threat.It is one of five classes of immunoglobulins (A, G, M, D, and E) and is normally present in the blood in very small amounts. This test measures the amount of IgE in the blood.Immunoglobulins are proteins that play a key role in the body's immune system.mmunoglobulin E is associated with allergic responses including asthma and to a lesser degree with immunity to parasites. With allergies, the body overreacts to one or more substances in the environment called allergens that do not typically cause a response in other people.