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.
chemo-. 1. a combining form with the meanings âchemical,â âchemically induced,â âchemistry,â used in the formation of compound words: chemotherapy. Also, especially before elements of Latin origin, chemi-. Also, especially before a vowel, chem-. Origin. chem-, extracted from chemical or chemistry + -o- or -i-.