The BAC DNA MiniPrep Kit is designed for the rapid preparation of BACs (bacterial artificial chromosomes) and other large DNA constructs from small batch cultures of Escherichia coli. Purification of ...

Since Philadelphia is arranged on a grid system, the mostly one-way roads are easy to navigate. Helpful maps are posted along street corners across the city – watch for the "Walk! Philadelphia" signs ...

Situated about halfway between Kansas City, Missouri, and Indianapolis, St. Louis overlooks the Mississippi River on the Missouri-Illinois border. Inside its 79 neighborhoods, visitors will find ...

Down syndrome, the most frequent birth defect (around 1/700 births), results in most cases from the presence in all cells of an extra copy of chromosome 21. It is characterized by a complex and ...