Table 1.

Extent of CBS, CSE, and MPST staining in PTC tissues and adjacent normal tissues

	PTC (n=176)		Adjacent normal tissues (n=134)	p-value
CSE	-	23	102	0.000
	+	48	26
	++	105	6
CBS	-	124	107	0.117
	+	43	24
	++	9	3
MPST	-	129	98	0.975
	+	37	23
	++	10	13

“-” (negative, <10% positive cells); “+” (moderate, 10-50% positive cells); “++” (strong, >50% positive cells).