Table 1.

Experimental conditions

Groups	Anesthetic during QUEST MRI	Same mouse (n)		Different mice (n)
		Baseline	MB/ALA	Saline × 2	MB/ALA
From Jackson Labs
2 months C57BL/6 (B6J)	Urethane			5	5
2 months B6J, isoflurane (15 min, 1 week prior)	Urethane			9	10
2 months B6J isoflurane (15 min, 1 week prior	Isoflurane	5
From NIA
2 months B6NIA	Urethane			7	7
2 months B6NIA	Urethane			6	6