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. 2018 Dec 6;8(12):216. doi: 10.3390/brainsci8120216

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© 2018 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).

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The middle cerebral artery (MCA) was isolated from normal pregnant and HELLP rats, and the relationship in changes to the lumen diameter between the active (with Calcium) and passive (without Calcium) responses was analyzed for NP (A) and HELLP (B) rats. The myogenic tone of the vessels was calculated and found to be significantly different at all pressures between NP and HELLP rats (C). * denotes p < 0.05 compared to the opposite data point at the same pressure. NP, n = 4; HELLP, n = 3.