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. 2014 Jun 23;9(6):e100504. doi: 10.1371/journal.pone.0100504

Figure 3. Serum steroid levels detected by Liquid Chromatography Tandem Mass Spectrometry [LC-Tandem MS]: Serum corticosterone [B] –to- dehydrocorticosterone [DHB] ratio (A) and serum progesterone levels (B) were determined at day 21 (LP n = 21, NP n = 22) and day 28 (LP n = 20, NP n = 24).

Figure 3

Further data regarding LC-Tandem MS intensity profiles of (dehydro-) corticosterone and progesterone (e.g. multiple reaction monitoring, retention time etc.) and a detailed description of the method can be found in Method S1. LP =  low protein (white bars); NP =  normal protein (black bars); d =  day; * =  p<0.05, ** =  p<0.01; *** =  p<0.001; ns =  not significant.