Louis Pellegrino MD


Chorionic villi of the placenta

Chorionic villi are tiny, branching growths found in the placenta. The cells of the chorionic villi have the same genetic material as the cells of the fetus.

Vellosidades coriónicas de la placenta

Ilustración: Copyright 2000 Nucleus Communications, Inc. Todos los derechos reservados. http://www.nucleusinc.com Las vellosidades coriónicas son diminutos crecimientos con forma de dedo que se encuentran en la placenta. El material genético de las células de vellosidades coriónicas es el mismo que el de las células del…

Chorionic villi of the placenta

Chorionic villi are tiny, branching growths found in the placenta. The cells of the chorionic villi have the same genetic material as the cells of the fetus.

ADHD: Tests for Other Disorders

The child who is being evaluated for attention deficit hyperactivity disorder (ADHD) may be evaluated for other disorders associated with the condition, such as learning or behavior disorders. The child may be asked questions (verbal tests) or may be given written tests to evaluate his or her intellectual abilities…

Autism spectrum disorder (ASD)

Autism spectrum disorder (ASD) is a developmental disorder. It affects a person’s behavior and makes communication and social interactions difficult. People who have ASD are born with it. In most cases, symptoms of ASD are noticed by the time a child is 2 years old. But if symptoms are severe, a parent may notice them…