Investigators have two important questions to consider when evaluating microarray expression data. First, they must ask whether the results are valid—in other words, accurate—for the particular ...

Statistics is, or at least should be, a service industry; dedicated to helping other researchers with their more disagreeable data analyses. This is becoming more important now, as biologists produce ...

This is a preview. Log in through your library . Abstract Escherichia coli MG1655 induces the nitrogen-regulated (Ntr) response when grown in a medium in which ammonia is absent and nitrogen is ...