Table 2.

Fatty acid composition of human brain glycerophosphatides

Fatty acid	Fatty Acyl Composition (% of total fatty acid in each phospholipid class)
	Phosphatidylserine				Phosphatidylethanolamine				Phosphatidylcholine
	Gray matter		White matter		Gray matter		White matter		Gray matter		White matter
	Aa	Bb	A	B	A	B	A	B	A	B	A	B
16:0	2.3	4.2	1.7	1.9	6.7	5.7	6.7	3.4	45.0	45.9	34.3	30.2
16:1	0.3	0.3	0.4	0.3	0.4	0.4	1.4	0.5	3.1	2.4	1.0	2.3
18:0	25.4	45.3	35.8	44.1	26.0	28.4	9.0	9.3	9.3	11.2	13.4	12.9
18:1	21.5	14.0	39.7	41.4	11.9	10.3	42.4	38.9	31.4	30.3	45.2	47.1
20:4	1.6	3.0	2.0	1.2	13.8	11.2	6.4	16.5	4.1	3.6	1.3	0.8
22:5n-6	5.0	0.7	4.8	0.1	14.3	1.2	13.7	0.7	ndc	trd	nd	0.2
22:5n-3	3.3	0.5	0.9	0.2	tr	1.1	0.5	0.9	nd	tr	0.3	0.3
22:6	36.6	23.2	5.6	1.3	24.3	30.5	3.4	8.6	3.1	2.5	0.1	0.2

^aData in A columns are from 55 year old subject, O’Brien et al [51].

^bData in B columns are from 52 year old female, Svennerholm [1].

^cNot detected.

^dTrace.