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Our gut is colonized by numerous bacteria throughout our life, and the gut epithelium is constantly exposed to foreign microbes and dietary antigens. Thus, the gut epithelium acts as a barrier against microbial invaders and is equipped with various innate defense systems. Resident commensal and foreign invading bacteria interact intimately with the gut epithelium and can impact host cellular and innate immune responses. From the perspective of many pathogenic bacteria, the gut epithelium serves as an infectious foothold and port of entry for disseminate into deeper tissues. In some instances when the intestinal defense activity and host immune system become compromised, even commensal and op...
The proper physiological functioning of most eukaryotic cells requires their assembly into multi-cellular tissues that form organized organ systems. Cells of the immune system develop in bone marrow and lymphoid organs, but as the cells mature they leave these organs and circulate as single cells. Antigen receptors (TCRs) of T cells search for membrane MHC proteins that are bound to peptides derived from infectious pathogens or cellular transformations. The detection of such speci?c peptide–MHC antigens initiates T cell activation, adhesion, and immune-effectors functions. Studies of normal and transformed T cell lines and of T cells from transgenic mice led to comprehensive understanding ...
In Optimizing Your Health, Emily Gold Mears shares years of research and knowledge to help others understand how they can become their own health advocate, modify their lifestyle to reduce their risk of chronic disease, and take a proactive role in their own healthcare. Gold Mears features real life stories, clinical studies, the latest discoveries, and infographics to demonstrate what is hurting us and what can help us in our pursuit of a long, healthy life. This book curates a vast amount of health and wellness information and focuses on the most salient aspects. Gold Mears’s book is essential reading for those who are committed to reducing their risk of chronic disease, aging well, and feeling their best.
The means by which non-enveloped viruses penetrate cellular membranes during cell entry remain poorly defined. Recent findings indicate several members of this group share a common mechanism of membrane penetration in which the virus particle undergoes programmed conformational changes, leading to capsid disassembly and release of small membrane-interacting peptides. A complete understanding of host cell entry by this minimal system will help elucidate the mechanisms of non-enveloped virus membrane penetration in general
Viruses are studied either because they cause significant human, animal or plant disease or because they are useful materials for probing basic phenomena in biology, chemistry, genetics and/or molecular biology. Arenaviruses are unusually interesting in that they occupy both categories. Arenaviruses cause several human diseases known primarily as the hemorrhagic fevers occurring in South and Latin America (Bolivia: Machupo, Argentine, Junin virus, and Brazil: Sabia virus) and in Africa (Lassa fever virus). Because such viruses produce profound disabilities and often kill the persons they infect, they are a source of health concern and economic hardship in the countries where they are prevale...
This book offers a comprehensive review of basic and clinical research on Varicella-zoster Virus, the only human herpesvirus for which vaccines to prevent both primary and recurrent infection are approved.
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The second volume of Arenaviruses deals with the biology and the pathogenesis of arenaviruses primarily through the study of LCMV. The fundamental observation of MHC restriction and CD8 cytotoxic T lymphocyte killing derived initially from studies with LCMV in the mouse, and has been expanded to studies of most human pathogens, viral, bacterial, parasitic, as well as events in cancer. The scope and importance of this observation was recognized by awarding the Nobel Prize in 1996 to Rolf Zinkernagel and Peter Doherty, long-time workers in the field of LCMV and arenavirus biology. Since then, many of the principles for understanding viral pathogenesis and biology of animal viruses have been defined, in great part, from the lessons learned by studying LCMV. Those lessons and their implications are the subject of this second volume on the arenaviruses.