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Hiatal hernia. (a) The hernia occurs when the stomach protrudes through the diaphragm and into the t
Rocks are the most common geosphere materials, and can be fun, dangerous, beauti
At breakfast, a middle-class husband sits absorbed in the newspaper and the public affairs of the da
Biosynthesis of methionine and threonine from homoserine, as it occurs in plants and bacteria
Structures of class I, class II, and class III mobile genetic elements
Immune-to-brain signaling occurs in response to infection, injury, and inflammation that occur in pe