IgA Deficiency. Print. IgA deficiency is a defect in the immune system characterized by an inadequate amount of the antibody class known as immunoglobulin A (IgA). Antibodies are large proteins produced by the body to fight infections caused by invaders, such as bacteria, viruses, fungi, parasites, and other foreign agents.
Definition of ultimo. : of or occurring in the month preceding the present.
antonym - a word that expresses a meaning opposed to the meaning of another word, in which case the two words are antonyms of each other; to him the antonym of `gay' was `depressed'. opposite, opposite word.