SRX027097 SRA024249 seq-AB46540_NIgG_N2_MXemb_2_A_EE1432 seq-AB46540_NIgG_N2_MXemb_2_A_EE1432 NIgG|Caenorhabditis elegans_N2_MXemb NIgG N2|Caenorhabditis elegans_N2_MXemb|MXemb N2 ChIP-Seq