A fatal disease of infants in which there is fever, generalized lymph node, liver and spleen enlargement, an eczematous skin rash and anaemia. The condition is brought about by an enormous increase in the number of antigen-presenting cells of the immune system known as Langerhans cells.
Tracking trends in political culture is very tricky. There is no typical American.. These factors and others are merely indicators of tendencies, yet there are many exceptions. In the end, Americans are influenced by a wide array of factors when they cast their secret votes on Election Day.
difference in exposure to risk factors by the populations being compared. Migrant studies compare cancer incidence or mortality rates for relocated. ethnic populations with the rates that prevail in the country of origin as well. as the country of adoption. These studies can shed light on the relative impor-. tance of genetic and environmental factors in the etiology of cancer.