Infant feeding practices and reported food allergies at 6 years of age.

Objective: The goal of this study was to identify the frequency of physician-diagnosed food allergies among 6-year-old US children and study the impact of exclusive breastfeeding and complementary food introduction on this frequency.

Methods: Data were analyzed from children who participated in the Infant Feeding Practices Study II Year 6 Follow-Up Study (Y6FU). Children with probable food allergy (pFA) were defined as children with report of physician-diagnosed food allergy at age 6 years.

A high-throughput method for monitoring changes in homeobox gene expression.

Members of the homeobox gene superfamily of transcription factors are essential determinants of cellular identity during development. Their regulation and downstream gene targets are not well understood, however. This is due, in part, to the large number of genes that need to be analyzed simultaneously.

Maternal exposure to androstenedione does not induce developmental toxicity in the rat.

Thirty-day old female rats received corn oil or androstenedione (in corn oil) at one of four concentrations (5.0, 10.0, 30.