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. 2018 Nov 14;19(11):3589. doi: 10.3390/ijms19113589

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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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Panels (A–F) show the Rank correlations, performed by using MedCalc 7.6, between Progesterone (PROG), Sphingomyelin (d18:0/22:0) (SM), Sphinganine (Sa), Ceramide (d18:1/16:0) (C16Cer), Glucosylceramide (d18:1/16:0) (C16GlcCer), Tyrosine (TYR) and Free Carnitine (C0), respectively. The black squares indicate the first trimester of pregnancy, the red circles indicate the second trimester of pregnancy, the blue diamonds indicate the third trimester of pregnancy, and the green triangles indicate the post-partum period.