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Table 1 Plasma oestrogen and testosterone levels (mean ± SD) before and after spaying/neutering

From: No up-regulation of the phosphatidylethanolamine N-methyltransferase pathway and choline production by sex hormones in cats

  Group 1 (male intact ) (n = 6) Group 2 (male neutered) (n = 6) Group 3 (female intact) (n = 6) Group 4 (female spayed) (n = 6)
Testosteronea (pmol/L) 824.3 ± 929.4 36.6 ± 17.0   
Oestrogenb (pmol/L)    9.6 ± 6.4 3.0 ± 1.0
  1. a P < 0.001 male intact versus neutered
  2. b P < 0.041 female intact versus spayed