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. 2011 Feb 9;6(2):e16295. doi: 10.1371/journal.pone.0016295

Figure 11. The localization of M3 muscarinic receptor immunoreactivity on intestinal stem cells.

Figure 11

The stem cells, indicated by arrows, are slender cells located between the Paneth cells (PC) at the very base of the crypts [17], [26]. The left part of the figure indicates that the muscarinic receptor M3 is located to the plasma membrane of the presumed intestinal stem cells. The tissue section in the right panel was only exposed to the secondary antibody. Mayer's haematoxylin. CL  =  crypt lumen.