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Cx36 plaque distribution in the IPL of mammalian species. Histogram showing results of densitometric analyses in the IPL of various mammalian species. Solid lines delineate IPL boundaries (INL/IPL on top, IPL/GCL on bottom), whereas dashed lines represent borders of IPL strata (shading helps the distinction between strata). Densitometric data were normalized to the highest measured peak, thus they only show relative Cx36 plaque density (see Materials and Methods for details).
