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Pathophysiology, in the broadest terms, is the study of disease. Disease occurs for many reasons. Some diseases represent spontaneous alterations in the ability of a cell to proliferate and function normally, and in other cases, disease results when external stimuli produce changes in the cell's environment that make it impossible for the cell to maintain homeostasis. In such situations, cells must adapt to the new environment. These adaptations include hyperplasia, hypertrophy, atrophy, and metaplasia, and can be physiologic or pathologic, depending upon whether the stimulus is normal or...

Are you a college student or recent graduate with a great idea for a business?

You're not alone. All across the country, more and more students are seeking advice on starting their own businesses. The entrepreneurial spirit is thriving at Harvard, where many students, past and present, have become successful business owners--even founders of Fortune 500 companies. Now, some of the bright minds of the Harvard Entrepreneurs Club, a recognized student organization of Harvard College, have compiled their business knowledge and experience into one comprehensive manual to aid students...

Molluscs play important ecological roles in the different aquatic and terrestrial ecosystems of the world.Molluscs are extremely diverse in tropical and temperate regions but can be found almost at all altitudes. Molluscs produce a wide range of biotoxins and metabolites that are used in medical research, the lethal toxins produced by cone snails develops a drug called ziconotide for patients with cancer and AIDS, who are suffering from pain that cannot be relieved by opiates. The present book represents the genetic diversity and distribution of molluscs under sub-mountainous regions of...