TABLE I.

Quantification of amyloid β (Aβ) isoforms in human CSF before and after μIP.

Aß isoforms	CSF before μIP (ng/ml)	CSF after μIP (ng/ml)	CSF before μIP (%)	CSF after μIP (%)
1-37	2.32	0.15	6.0	6.1
1-38	4.81	0.34	12.4	13.7
1-39	2.60	0.14	6.7	5.7
1-40	24.25	0.88	62.7	35.6
1-42	4.69	0.96	12.1	38.8