Expression of Monocarboxylate Transporters 1, 2, and 4 in Human Tumours and Their Association with CD147 and CD44

Table 2

Frequency of MCTs expression in nonneoplastic and malignant breast and lung tissues.

	Breast tissues					Lung tissues
		Cyt^a		PM			Cyt^a		PM
	𝑛	Positive (%)	𝑃	Positive (%)	𝑃	𝑛	Positive (%)	𝑃	Positive (%)	𝑃
MCT1			.001		.067			1		.612
Normal	15	7 (46.7)		0 (0.0)		6	4 (66.7)		2 (33.3)
Tumour	22	21 (95.5)		5 (22.7)		23	14 (60.9)		5 (21.7)
MCT2			.142					.300
Normal	15	13 (86.7)				9	8 (88.9)
Tumour	24	24 (100.0)				21	21 (100.0)
MCT4			.004		1			.289		.001
Normal	15	5 (33.3)		0 (0.0)		6	6 (100.0)		4 (66.7)
Tumour	24	19 (79.2)		1 (4.2)		23	16 (69.6)		0 (0.0)

Cyt: cytoplasm; PM: plasma membrane; ^awith or without plasma membrane staining.