X-Men Who Are Currently On A Leave Of Absense To Hunt Down The Books Of Truth[?]:
Deceased X-Men:
Former Members:
X-Men Allies:
Villains:
... Aase syndrome[?] ABCD syndrome[?] Abdallat Davis Farrage syndrome[?] Abdominal aortic aneurysm[?] Abdominal cystic lymphangioma[?] Abdominal defects[?] ...