Nine units comprise the volume (for Unit IX, see NCJ 92242). Following background material in biochemistry, genetics, and immunology and a survey of selected test methods, the text looks at identification of blood and body fluids, species determination, and different classes of genetic markers in blood and body fluids. Other units encompass the sexing of bloodstains, efforts to individualize blood using nongenetic markers, and a set of translations of original papers of historical interest. References are given at the end of each unit. Figures and tables are included.