SRX2902848 GSM2664245 SRP109115 SRS2276405 GSM2664245 ChIP-Seq GENOMIC ChIP T cells were crosslinked with 2% paraformaldehyde at room temperature for 10 min and sonicated to generate fragmented genomic DNA. Chromatin immunoprecipitation was performed using the following antibodies: anti-H3K27me3 (Millipore). For sequencing of immunoprecipitated DNA, DNA fragments were blunt-end ligated to Illumina adaptors, amplified, and sequenced by using the HiSeq 2000 platform (Illumina). For sequencing of immunoprecipitated DNA, DNA fragments were blunt-end ligated to Illumina adaptors, amplified, and sequenced by using the HiSeq 2000 platform (Illumina). Illumina Genome Analyzer gds 302664245 GSM2664245 GEO Accession GSM2664245 SRX2902849 GSM2664246 SRP109115 SRS2276409 GSM2664246 ChIP-Seq GENOMIC ChIP T cells were crosslinked with 2% paraformaldehyde at room temperature for 10 min and sonicated to generate fragmented genomic DNA. Chromatin immunoprecipitation was performed using the following antibodies: anti-H3K27me3 (Millipore). For sequencing of immunoprecipitated DNA, DNA fragments were blunt-end ligated to Illumina adaptors, amplified, and sequenced by using the HiSeq 2000 platform (Illumina). For sequencing of immunoprecipitated DNA, DNA fragments were blunt-end ligated to Illumina adaptors, amplified, and sequenced by using the HiSeq 2000 platform (Illumina). Illumina Genome Analyzer gds 302664246 GSM2664246 GEO Accession GSM2664246 SRX2902850 GSM2664247 SRP109115 SRS2276407 GSM2664247 ChIP-Seq GENOMIC ChIP T cells were crosslinked with 2% paraformaldehyde at room temperature for 10 min and sonicated to generate fragmented genomic DNA. Chromatin immunoprecipitation was performed using the following antibodies: anti-H3K27me3 (Millipore). For sequencing of immunoprecipitated DNA, DNA fragments were blunt-end ligated to Illumina adaptors, amplified, and sequenced by using the HiSeq 2000 platform (Illumina). For sequencing of immunoprecipitated DNA, DNA fragments were blunt-end ligated to Illumina adaptors, amplified, and sequenced by using the HiSeq 2000 platform (Illumina). Illumina Genome Analyzer gds 302664247 GSM2664247 GEO Accession GSM2664247 SRX2902851 GSM2664248 SRP109115 SRS2276408 GSM2664248 ChIP-Seq GENOMIC ChIP T cells were crosslinked with 2% paraformaldehyde at room temperature for 10 min and sonicated to generate fragmented genomic DNA. Chromatin immunoprecipitation was performed using the following antibodies: anti-H3K27me3 (Millipore). For sequencing of immunoprecipitated DNA, DNA fragments were blunt-end ligated to Illumina adaptors, amplified, and sequenced by using the HiSeq 2000 platform (Illumina). For sequencing of immunoprecipitated DNA, DNA fragments were blunt-end ligated to Illumina adaptors, amplified, and sequenced by using the HiSeq 2000 platform (Illumina). Illumina Genome Analyzer gds 302664248 GSM2664248 GEO Accession GSM2664248