The textbook on Pharmaceutical Biotechnology provides comprehensively the fundamental concepts and principles in Biotechnology to expatiate and substantiate its numerous modern applications with regard to the spectacular development in the Pharmaceutical Industry. N a broader perspective, the students studying Biotechnology at undergraduate and postgraduate levels shall be grossly benefited by its well-planned systematically developed, structured, illustrated, expanded, elaborated, and profusely exemplified subject matter. It essentially comprises five major chapters, namely: Immunololgy and Immunological Preparations; Genetic Recombination; Antibiotics; Microbial Transformations; and Enzyme Immobilization. Besides, there tare five, auxiliary chapters, namely: Advent of Biotechnology; Biosensor Technology; Bioinformatics and Data Mining; Regulatory Issues in Biotechnology; and Safety in Biotechnology, which have been specifically included so as to stimulate the students, interest and broaden their horizon of knowledge and wisdom. The authors earnestly believe that the wide coverage of various stoics mentioned above would certainly render Pharmaceutical Biotechnology to serve as an exclusive source of informations, ideas, inspirations towards research, and finding newer possible practical solutions to problems encountered in the ever green pasture using knowledge of Biotechnology in the Pharmaceutical Industry.