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. 2009 Nov 16;106(48):20504–20509. doi: 10.1073/pnas.0908083106

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Fig. 4. — Resistance of LTP induction at basal dendrites to the inhibitory effect of TNFα and Aβ_1–42. High frequency stimulation (arrows) induced robust LTP of synaptic transmission at basal dendrites of CA1 pyramidal cells in the stratum oriens of animals injected i.c.v. with either vehicle (5 μL, n = 6, P < 0.05) (closed circles), TNFα (1.5 pmol, n = 6, P < 0.05) (open circles) or Aß1–42 (320 pmol, n = 6, P < 0.05) (triangles). Values are the mean percentage of pre-HFS baseline EPSP amplitude (±SEM). Calibration bars for EPSP traces: vertical, 0.5 mV; horizontal, 10 ms.