Table 1.

Mean plasma and CSF AA concentrations, and ratios of CSF/plasma AA concentrations in Alzheimer’s patients and controls*

Assessment	Control	Alzheimer’s
CSF AA (μM)	183	160
(N)	(43)	(47)
Plasma AA (μM)	68	47
(N)	(43)	(47)
Ratio of AA, CSF/plasma	3.0	4.0
(N)	(43)	(47)

*The data are weighted means of three age-and sex-matched, controlled studies (See Table  3 of Bowman [36] for details.) Number of subjects is in parentheses.