Fig. 2From: Short-term effect of ovariohysterectomy on urine serotonin, cortisol, testosterone and progesterone in bitchesCortisol/creatinine ratios (mean value ± standard error) in seven bitches before and after ovariohysterectomy. W = weeks. The cortisol level was higher the morning before ovariohysterectomy compared with all samples after ovariohysterectomy and the evening before. *Significantly different from morning sample before ovariohysterectomy. P ≤ 0.05Back to article page