Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12917-015-0628-x/MediaObjects/12917_2015_628_Fig2_HTML.gif)
Ratios of nerve growth factor/ creatinine in urine and nerve growth factor levels in serum in the different groups. Ratios of nerve growth factor/creatinine in urine (NGF/Crea) and nerve growth factor levels in serum (NGF Serum) in the different groups: control group (healthy dogs; n = 20), neurological disorders (ND; n = 14), spinal cord disorders without micturition dysfunctions (SC; n = 15) and spinal cord disorders with micturition dysfunction (SC MD; n = 27). No significant differences could be detected. The boxplots are indicating minimums and maximums, lower and upper quartiles and medians