"This is an excellent book with good illustrations on circulating microRNAs, given their pathogenic, diagnostic, and potential therapeutic relevance. The intended audience includes students, researchers, and others in the field of biomedicine wishing to learn more about microRNAs. The book should also prove quite interesting to clinicians who want to understand more about microRNAs given their relevance in diagnostics and therapeutics. The author is a credible authority in this field." (Omer Iqbal, Doody's Book Reviews, September, 2016)