A number of infections and diseases may cause an enlarged spleen. The enlargement of the spleen may be temporary, depending on treatment. Contributing factors include: 1  Viral infections, such as mononucleosis.  Bacterial infections, such as syphilis or an infection of your heart's inner lining (endocarditis)
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A light bulb is a device that produces light from electricity. In addition to lighting a dark space, they can be used to show an electronic device is on, to direct traffic, for heat, and many other purposes. Early people used candles and oil lamps for light. Crude incandescent lights were made in the early and middle 19th century but had little use. Improved vacuum pumps and better materials made them shine longer and brighter late in the century. Electric power stations brought electricity to u