Book excerpt: This book contains examples written by internationally recognized experts applying proteomics and analysis applications of mass spectrometry in their everyday research. They dedicate this book to a broad audience of all scientists to encourage them to use the omics approach to investigate biological processes.The first chapter is a short introduction to the basics of analytical chemistry. The following chapters describe high-throughput proteomic studies and how they are applied in various areas of biological and biomedical sciences, providing valuable insights into how biological systems work at the molecular level.