au·to·an·ti·gen 
(ô′tō-ăntĭ-jən)
(ô′tō-ăntĭ-jən)n.
An endogenous antigen that stimulates autoantibody production, as in an autoimmune reaction.
- what for
- what have you
- what if
- what is is it with
- what it takes
- whatnot
- whatsis
- what's is is it with
- whatsit
- whatsoever
- what's what
- what's what is it with
- what's/what is/what is it with
- what what is it with
- what with
- wheal
- wheat
- wheat beer
- wheat bread
- wheatear
- wheaten
- wheaten terrier
- wheat germ
- wheatgrass
- Wheatley