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Fig. 2. Overlap between Polycomb targets in three different studies. A
comparison of results from three studies which looked at binding profiles for
several PcG proteins using tiling path arrays covering all or part of the
Drosophila genome (Negre et al.,
2006; Tollhuis et al., 2006;
Schwartz et al., 2006) (see
Box 1 for more detail on the
techniques used). The diagram compares the regions in common between the three
studies (2 Mb of the X chromosome and 3 Mb of chromosome 2L.) The large-type
numbers in each field show the number of genes found to be bound by PcG
proteins. Subscript numbers in brackets show the number of those genes that
have a score of over 70 using PRE/TRE prediction
(Ringrose et al., 2003). The
score cut-off used in Ringrose et al.
(Ringrose et al., 2003) was
157 (see main text for details).
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