Table 1.

Number of Cases Showing PrP^Sc Immunoreactivity or Lack of PrP^Sc Immunoreactivity in Different Medullary Nuclei and the Vagal and Hypoglossal Nerves

	PrP IHC Positive
PrP IHC Positive	Dorsal Vagus NU	Ambiguus NU	Hypoglossal NU	Hypoglossal Nerve	Vagus Nerve
Dorsal vagus NU		51	50	2	11
Ambiguus NU	55		48	2	11
Hypoglossal NU	47	45		2	11
Hypoglossal nerve	2	2	2		2
Vagus nerve	11	11	11	2

	PrP IHC Negative
PrP IHC Positive	Dorsal Vagus NU	Ambiguus NU	Hypoglossal NU	Hypoglossal Nerve	Vagus Nerve
Dorsal vagus NU		1	8	30	44
Ambiguus NU	0		7	28	41
Hypoglossal NU	0	0		27	37
Hypoglossal nerve	0	0	0		0
Vagus nerve	0	45	0	1

	PrP IHC Negative
PrP IHC Negative	Dorsal Vagus NU	Ambiguus NU	Hypoglossal NU	Hypoglossal Nerve	Vagus Nerve
Dorsal vagus NU		103	111	82	111
Ambiguus NU	100		104	79	106
Hypoglossal NU	108	101		87	119
Hypoglossal nerve	80	77	85		124
Vagus nerve	108	103	121	124

IHC = immunohistochemistry; NU = nucleus; PrP^Sc = disease‐associated prion protein.