DNA microarray is a technique that is used to detect and measure gene expression levels. However, there are several synonyms for DNA microarray, such as biochip, gene chip, and DNA chip. All of which refer to the same technology. Another alternative term is microscale bioassay, which is a broader term and can include other methods of gene expression profiling. These techniques play a significant role in molecular biology and the development of personalized medicine. They help researchers to understand diseases and identify potential therapeutic targets. No matter how this technology is referred to, DNA microarray has undoubtedly revolutionized the field of genetics, opening a new era in medical research.