If you're Rh negative and your baby is Rh positive, however, your body might produce proteins called Rh antibodies after exposure to the baby's red blood cells. The antibodies produced aren't a problem during the first pregnancy.he Rh factor test is done during pregnancy to identify a woman's Rh factor. In some cases, the baby's father might need an Rh factor test, too. During pregnancy, problems can occur if you're Rh negative and the baby you're carrying is Rh positive.
Torque converter, opened, interior similar to a retarder. A retarder is a device used to augment or replace some of the functions of primary friction-based braking systems, usually on heavy vehicles. Retarders serve to slow vehicles, or maintain a steady speed while traveling down a hill, and help prevent the vehicle from running away by accelerating down the hill.
Psychomotor retardation (also called psychomotor impairment) is a visible slowing of physical activity such as movement and speech. It may have either a mental or organic, cause. Psychomotor retardation occurs as a symptom of many disorders ranging from genetic syndromes to mental illness to medications. It can also be a symptom of muscular degeneration or neurological disorders such as Parkinson's disease.