Hello

I'm a bit older and my eyes are not what they used to be, and I have trouble seeing von Frey filaments clearly enough to see that they are in contact with the foot of the mouse. We have a few older filaments that have been stained (with highlighter from the looks of things), and I can see these clearly. Therefore my question. Does anyone know of a supplier that uses coloured nylon to make the filaments. I really don't want to mark up a new set for my experiments.

Thanks in advance

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