PATHOLOGY

Detailed explanation-1: -A study of twins conducted by Stanford University School of Medicine investigators shows that our environment, more than our heredity, plays the starring role in determining the state of our immune system, the body’s primary defense against disease.

Detailed explanation-2: -Genes also affect the way the immune system works or how it responds to threats. Primary immunodeficiency disorders are present at birth. They are often inherited. This means they are linked to genes passed from one generation to another.

Detailed explanation-3: -During the last 3 months of pregnancy, antibodies from mothers are passed to their unborn babies through the placenta. This type of immunity is called passive immunity because the baby has been given antibodies rather than making them itself.

Detailed explanation-4: -Many primary immunodeficiency disorders are inherited-passed down from one or both parents. Problems in the genetic code that acts as a blueprint for producing the cells of the body (DNA) cause many of these immune system defects.

Detailed explanation-5: -Some people seem better than others at fighting the flu, and you might suspect they were born that way. A new study of twins, however, suggests otherwise.