Season 4

S04E01 - TB or Not TB - March 02, 2008
S04E02 - La Consecuencia - March 09, 2008
S04E03 - Hep Burn and Melinkov - March 16, 2008
S04E04 - The Kiss - March 23, 2008
S04E05 - Suspicious Minds - March 30, 2008
S04E06 - Race Fever - April 06, 2008
S04E07 - Hearts and Minds - April 13, 2008
S04E08 - Brood 14 - April 20, 2008
S04E09 - Unbottled - April 27, 2008
S04E10 - What It Feels Like - May 04, 2008
S04E11 - Bloodless - May 11, 2008
S04E12 - The Sounds of Science - May 18, 2008
S04E13 - The Truth - May 25, 2008

Season 3

S03E01 - A Spontaneous Moment - April 01, 2007
S03E02 - Dust in the Wind - April 01, 2007
S03E03 - Strangers in the Night - April 08, 2007
S03E04 - I Dream of Genomes - April 15, 2007
S03E05 - The God of Commerce - April 22, 2007
S03E06 - Phantoms - April 29, 2007
S03E07 - One Hand Washes the Other - May 06, 2007
S03E08 - Sleepers - May 13, 2007
S03E09 - Let it Burn - May 20, 2007
S03E10 - Unbearable - May 27, 2007
S03E11 - Adrift - June 03, 2007
S03E12 - Jacobson's Organ - June 10, 2007
S03E13 - Back to the Future - June 17, 2007

Season 2

S02E01 - China - March 19, 2006
S02E02 - Escape Mutant - March 26, 2006
S02E03 - The Cocktail - April 02, 2006
S02E04 - Dim & Dimmer - April 09, 2006
S02E05 - Massive Change - April 16, 2006
S02E06 - Our Man in Havana - April 23, 2006
S02E07 - Talk To Him - April 30, 2006
S02E08 - Haze - May 07, 2006
S02E09 - Gene in a Bottle - May 14, 2006
S02E10 - The Wild and the Innocent - May 21, 2006
S02E11 - Fishy - May 28, 2006
S02E12 - Lethargica - June 04, 2006
S02E13 - The End - June 11, 2006

Season 1

S01E02 - Spare Parts - October 24, 2004
S01E01 - Baby Bomb - October 24, 2004
S01E03 - The Face of God - October 31, 2004
S01E04 - Prions - November 07, 2004
S01E05 - The Oldest Virus - November 14, 2004
S01E06 - The Trials - November 21, 2004
S01E07 - Faint Hope - November 28, 2004
S01E08 - Blackout - December 12, 2004
S01E09 - The Secret War - December 19, 2004
S01E10 - The Source - January 02, 2005
S01E11 - The Promise - January 09, 2005
S01E12 - Resurrection - January 16, 2005
S01E13 - The Longest Night - January 23, 2005