Fifth Doctor's regeneration

Fifth Doctor's regeneration
Type:	Regeneration
First appearance:	The Caves of Androzani
Appearances:	TV: The Twin Dilemma, PROSE: Lungbarrow, AUDIO: Winter
Location:	The Doctor's TARDIS
Result
The Fifth Doctor becomes the Sixth Doctor

The Doctor's regenerations
Timeless regeneration cycle
First Doctor's regeneration cycle
New regeneration cycle
Other regenerations

About the Doctor

The Fifth Doctor underwent his regeneration into the Sixth Doctor within the control room of his TARDIS as a result of spectrox toxaemia contracted on Androzani Minor. (TV: The Caves of Androzani) This was the fifth regeneration of the 12-regeneration life cycle beginning with the First Doctor. (TV: The Time of the Doctor)

Legacy

The Doctor's friends relived this regeneration while going backwards through the Doctor's memories to learn about the Other. (PROSE: Lungbarrow)