Pulmonary surfactant is a surface-active lipoprotein complex (phospholipoprotein) formed by type II alveolar cells. The proteins and lipids that make up the surfactant have both hydrophilic and hydrophobic regions.
Antibody deficiencies, also called immunoglobulin deficiency syndromes, are immune system disorders that are characterized by low or absent levels of immunoglobulin in the blood.Immunoglobulins (Ig) are antibodies that play an essential role in the body's immune system.he antibodies are present in the bloodstream or bound to the outer surfaces of B-cells or plasma cells. There are five classes of immunoglobulins: IgA, IgD, IgE, IgG, and IgM. Patients who have antibody deficiencies may have reduced or absent levels of one or more types of immunoglobulin.
Vitamin B-12 and Iron. One of the primary causes of iron deficiency is blood loss. Anything that causes blood loss, from heavy periods to peptic ulcers, can eventually cause an iron deficiency.Given the body requires vitamin B-12 to produce red blood cells, a deficiency in vitamin B-12 can directly lead to a deficiency in iron.In this way, the onset of anemia could be the result of a B-12 deficiency rather than an iron deficiency, although the relationship is indirect.itamin B-12 and Iron. One of the primary causes of iron deficiency is blood loss. Anything that causes blood loss, from heavy periods to peptic ulcers, can eventually cause an iron deficiency.