The opening chapter examines the role of different reported oviduct factors in modulating gamete function, fertilisation and early embryo development. The guidelines of occupational post-exposure prophylaxis are reviewed in order to help guide clinicians in managing occupational exposure to human immunodeficiency virus. Next, the authors discuss how the detection of bacterial genes in the genome of eukaryotic cells has provided evidence for gene exchange between bacteria and eukaryotic cells, mainly from bacteria to fungi. The important structural information for potent and selective HDAC3, a zinc-dependent histone deacetylases isoform, inhibitors along with the structure-activity relationships of a handful of molecules may enrich the knowledge of academics and industry personnel. As such, this compilation provides a deep insight into HDAC3 and related inhibitors. In the penultimate chapter, the authors assess the algorithm of cell dead mechanism in spontaneous intracerebral hemorrhage and how the impact of intraperitoneal celecoxib treatment can increase the survival of neural stem cells. The concluding chapter focuses on how foreign protein accumulation in vacuoles proves to be a fruitful production strategy for for biological and industrial enzymes.