Table 2.

Degree of muscle and nerve alteration on biopsies

Dog	Muscle biopsies	Nerve biopsies
1	BF: +++, ERC: +	Neuropathy type: NPN Severity: +++ Fiber loss: +++ Inflammation: −
2	TC: +	Severity: + Fiber loss: + Inflammation: −
3	TC: ++	Neuropathy type: NPN Severity: +++ Fiber loss: ++ Inflammation: +
4	BF: ++, TB: +, ERC: +	Neuropathy type: INP Severity: + Fiber loss: + Inflammation: −
5	BF: +, TC: +++, TB: ++, ERC: ++	Neuropathy type: NPN Severity: +++ Fiber loss: +++ Inflammation: +/−
6	BF: ++, TC: ++, TB: ++	Neuropathy type: NPN Severity: +++ Fiber loss: ++ Inflammation: +
7	BF: ++, TC: +++, TB: ++	Neuropathy type: INP Severity: ++ Fiber loss: ++ Inflammation: +
8	Not performed	Neuropathy type: NPN Severity: +++ Fiber loss: +++ Inflammation: ‐
9	Not performed	Neuropathy type: NPN Severity: Fibular: ++, recurrent laryngeal: +++, ulnar: +++ Fiber loss: ++ − +++ Inflammation: +
10	TC: +++, ERC: ++	Neuropathy type: NPN Severity: +++ Fiber loss: +++ Inflammation: ++
11	Not performed	Neuropathy type: NPN Severity: +++ Fiber loss: ++
12	TB: +++	Neuropathy type: DNP Severity: +++ Fiber loss: ++ Inflammation: +
13	ERC: +, BF: +, TC: +	Neuropathy type: NPN Severity: +++ Fiber loss: ++ Inflammation: +
14	TB: +++, TC: +++	Neuropathy type: NPN Severity: Fibular: +++, ulnar: +++ Fiber loss: +++ Inflammation: +

BF, biceps femoris; ERC, extensor carpi radialis; TB, triceps brachii; TC, tibialis cranialis; NPN, nodo‐paranodopathy; INP, internodopathy; DNP, demyelinating neuropathy.

+, mild; ++, moderate; +++, severe.