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Season 1 - Jul. 15, 2004
Season 2 - Jul. 15, 2005
Season 3 - Jul. 14, 2006
Season 4 - Sep. 28, 2007
Season 5 - Jul. 11, 2008

Stargate Atlantis Season 1 Episode 7
HD
Overview:
The team finds a world whose people are on the brink of a discovery that may make them immune to the Wraith feeding.