The structure and metabolism of prokaryotic and eukaryotic cells reveals their nature and evolution, which can lead to new treatments for infectious and malignant diseases. Goran Indjic, a physician and clinical microbiologist, shares a detailed analysis of the phenomena of prokaryotic and eukaryotic cells in the book. Taking an innovative approach, he upends contemporary literature in the field. Relying on biology, philosophy, other scientific disciplines, and even art, Indjic offers fresh ideas and experiments for investigating the nature of prokaryotic and eukaryotic cells. According to this new approach, basic structures of prokaryotic and eukaryotic cells consist of polypeptides that build protein and nucleic acid spirals, which in turn build strings that generate filaments of prokaryotic cells and complex cylinders of eukaryotic cells. The author describes in detail the strings, filaments, and complex cylinders that are structures of the cells, built and unified by metabolism. Previously, prokaryotic and eukaryotic structures were observed in dead cells without deeper thinking and imagination. With deeper analysis, imagination, and thinking Universal Laws of Nature and Cells offers insights into the cellular phenomena and practical taxonomy of prokaryotic cells.