We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Doug Mahoney Doug Mahoney is a writer covering home-improvement topics, ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Hans Daniel Jasperson has over a decade of experience in public policy research, with an ...

A microarray is a set of samples, for example DNA, RNA or proteins, arranged on a solid substrate or chip, such as a glass slide or silicon film, that is used in high throughput experiments.