International Review of Connective Tissue Research is a compilation of scientific research mainly focuses on developments in special tissues. A detailed discussion of the lung and liver is included. Another topic of interest is the liver fibrosis development induced by parasitic infection or alcohol. The periodontal ligament is specialized tissue whose basic role is tooth support. This tissue is covered in detail. A section of the book provides an analysis of the elastin gene expression and regulation. Topics such as the microfibrillar components of connective tissue, the regulation of collagen genes, the complexity and the evolution of the collagen molecule, the invasiveness of malignant tumors, and the characteristics of fibroblast are fully explained. The text presents an exhaustive description of the connective tissue of the lung. This chapter includes a comprehensive description of the pulmonary system. The book will provide useful information to doctors, students, researchers and specialists in the field of human anatomy.