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• s  allowing communication in only one direction at a time, or in telegraphy allowing only one message over a line at a time
  simplex system
• s  having only one part or element
  a simplex word has no affixes and is not part of a compound--like `boy' compared with `boyish' or `house' compared with `houseboat'

• They grew herpes simplex virus in cultures of kidney cells taken from sheep embryos; then the live virus was inactivated by exposure to ultraviolet light.
• By age 40, nearly 90% of adults have been exposed to the herpes simplex virus-1 (HSV-1), which causes cold sores.
• The two types of herpes simplex generally attack different and sharply defined areas of the body.

News & Articles

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• Take care: The virus herpes
  More than 50 million Americans suffer from HSV-2, the herpes simplex virus. More commonly known as genital herpes, the virus can be transmitted unknowingly and shared easily if precautions are not taken. But how do people get this virus and what can be done to prevent it?
  July 1, 2013 - Chambersburg Public Opinion

Quotes

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• David Lloyd George in Helicopter Association International
  The Simplex name is synonymous with reliable, quality products,commented David George, Director of Business Development for Simplex. "This reputation is of critical importance to power line operators."