Research Article

Nodal Promotes the Self-Renewal of Human Colon Cancer Stem Cells via an Autocrine Manner through Smad2/3 Signaling Pathway

Figure 4

Expression of CD44 and CD24 in human colon cancer tissues and noncancerous colon tissues. (a–d) Immunohistochemistry showed the expression of CD44 in human colon cancer tissues (a) and adjacent noncancerous colon tissues (b) as well as CD24 in human colon cancer tissues (c) and adjacent noncancerous colon tissues (d). Scale bars in (a)–(d) = 10 μm.
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