Stevia preferences in Wistar rats.

Background: The Stevia rebaudiana plant is likely to become a major source of high-potency sweetener for the growing natural-food market. S. rebaudiana is the source of a number of sweet diterpenoid glycosides, but the major sweet constituents are rebaudioside A and stevioside.

Practical application of stereological methods in experimental kidney animal models.

The kidneys are vital organs responsible for excretion, fluid and electrolyte balance and hormone production. The nephrons are the kidney's functional and structural units. The number, size and distribution of the nephron components contain relevant information on renal function.

Trends in childhood and adolescent obesity prevalence in Oviedo (Asturias, Spain) 1992-2006.

Aim: To analyse obesity and overweight prevalence trend in Oviedo (Spain) during the last 14 years.

Patients And Methods: Two cross-sectional studies were conducted in the same five public schools of the urban area of Oviedo in 1992 and 2004-06. One thousand one hundred sixty-five children and young adults between the age of 6 and 17 years were studied in 1992 and 1312 in 2004-06.