A sense of belonging is basic to the human experience. But in this, humans are not unique. Essentially all life, from bacteria to humans, have ways by which it determines which members belong and which do not. This is a basic cooperative nature of life I call group membership which is examined in this book. However, cooperation of living things is not easily accounted for by current theory of evolutionary biology and yet even viruses display group membership. That viruses have this feature would likely seem coincidental or irrelevant to most scientist as having any possible relationship to...

Updated Throughout With The Latest Findings On The AIDS Virus, The Seventh Edition Provides Readers With The Most Current Information Available On The Biology Of The Virus And The Impact It Has On Society. The Seventh Edition Of This Best-Selling Text Provides Readers With A Solid Overview Of AIDS From Both A Biomedical And A Psychosocial Perspective. The Authors Cover The Molecular And Cellular Aspects Of The Virus And The Immune System's Response To It, And Examine Epidemiology And Its Role In Understanding HIV And AIDS. The Use Of Understandable Vocabulary And Clear Illustrations, Along...