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.
Top 10 facts about the world. Immunoglobulin is a type of protein that helps the body fight disease. Immunoglobulin, abbreviated at Ig, is also referred to as antibody. The substance is located in various parts of the body, depending on the type of immunoglobulin it is and its function.t is found in saliva, blood, and tears. IgG is the smallest form of immunoglobulin, and is located in all body fluids. It is responsible for fighting bacterial and viral infections, and is the only antibody that crosses the placenta to protect a fetus during pregnancy.