The cover image shows both Both ESCA and BORIS are expressed by human ES cells. Immunofluorescent staining of ECSA (green; A, E) and BORIS (green; I, M) with OCT4 (red; B, J) or NANOG (red F, N) showing co-localization in merged image (C, G, K, O). Nuclei are counter-stained with DAPI (blue). ESCA (E) and BORIS (M) also co-localize with NANOG (red; F, N) in merged image (G, O). Scale bar (200 μm). (See Monk et al., 347-355).
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