Pittsylvania County Service Authority PO BOX 209 Blairs, VA 24527-0209: Phone: 434-836-7135 Fax: 434-836-7139 Emergency Contact: 434-432-7931. Email Address: pcsa405@comcast.net Physical Address 405 R & L Smith Drive Danville, VA 24540 Click here for directions
Hemolytic disease of the newborn, also known as hemolytic disease of the fetus and newborn, HDN, HDFN, or erythroblastosis fetalis, is an alloimmune condition that develops in a fetus, when the IgG molecules (one of the five main types of antibodies) produced by the mother pass through the placenta.
Transient Erythroblastopenia of Childhood - Pathophysiology. 1  The etiology of transient erythroblastopenia of childhood is unknown. 2  In vitro studies using serum and immunoglobulin G (IgG) from some patients with transient erythroblastopenia of childhood demonstrated erythroid colony suppression, suggesting an immunologic etiology.