| We recently reported the retardation of the rate of crystallization, measured calorimetrically, in isotactic polystyrene nucleated with silica. |
| Congenital retardation seems to doom many of the retarded individual's interests to frustration. |
| Lead builds up in the tissues, and chronic lead poisoning can cause mental retardation and sterility. |
| This is a consequence of the considerable retardation of plasma flow through the layer over this range. |
| This includes more ultrasound examinations to detect intrauterine growth retardation. |
| It is the leading cause of pregnancy loss, congenital abnormalities and mental and physical retardation. |
