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. 2014 Aug 5;9(8):e103954. doi: 10.1371/journal.pone.0103954

Figure 3. Position of NOR-1 and NOR-2 in interphase nucleus of Q.robur.

Figure 3

A. Major 45S rDNA sites (NOR-1, arrowheads) are associated with the nucleolus while minor 45S rDNA sites (NOR-2, arrows) are positioned at the nuclear periphery. Statistical analysis of measured distances from the nucleolus (B, N = 220) or the nuclear periphery (C, N = 240) reveals differences between the two rDNA loci. Number of asterisks indicates p<0.0001; error bars represent the standard error of the mean. Letter «n» marks the nucleoli. Scale bar is 5 µm.