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. 2008 Feb 16;35(4):748–759. doi: 10.1093/schbul/sbn006

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© The Author 2008. Published by Oxford University Press on behalf of the Maryland Psychiatric Research Center. All rights reserved. For permissions, please email: journals.permissions@oxfordjournals.org.

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Fig. 6. — (A) Freezing Response (s) of Normotensive Wistar Rats (NWR) and Spontaneously Hypertensive Rats (SHR) Treated With Saline (SAL), 0.5 (AMPH 0.5), 1 (AMPH 1), 2.5 (AMPH 2.5), or 5 (AMPH 5) mg/kg Amphetamine or (B) Saline (SAL), 0.5 (METH 0.5), 2.5 (METH 2.5), or 5.0 (METH 5) mg/kg Methylphenidate Before the Training Session. *P < .05 compared with SAL group. #P < .05 compared with NWR group. +P < .05 compared with AMPH 0.5 or METH 0.5 group. Two-way analysis of variance followed by Duncan test. Data are reported as mean ± SE.