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. 2006 Jan;17(1):32–42. doi: 10.1091/mbc.E05-04-0339

Figure 4.

Figure 4.

t-RSF and hrp45 are recruited to transcriptionally active gene loci. Polytene chromosome III was isolated from C. tentans salivary gland cells and double-stained for Ct-RSF and hrp45. In A, the larvae were grown under normal conditions, and in B, in the presence of galactose. The BR6 gene locus (BR6), located close to the nucleolus (Nu) on chromosome III, is transcriptionally inactive under normal conditions. In the presence of galactose, the BR6 gene is transcribed and forms a large puff. Bar, 10 μm.