{"owner": "ArrayExpress Uploader", "pop_total": 0, "species": "mouse", "factors": [{"GSM981274": {"CELL TYPE": "B220+ CD23+ spleen B cells"}}, {"GSM981274": {"CELL TYPE": "B220+ CD23+ spleen B cells"}}, {"GSM981274": {"CELL TYPE": "B220+ CD23+ spleen B cells"}}, {"GSM981277": {"CELL TYPE": "B220- CD138+ bone marrow plasma cells"}}, {"GSM981277": {"CELL TYPE": "B220- CD138+ bone marrow plasma cells"}}, {"GSM981277": {"CELL TYPE": "B220- CD138+ bone marrow plasma cells"}}], "id": 6972, "ownerprofile_id": "arrayexpress_sid", "platform": 6, "summary_wrapped": "CD138+ B220- plasma cells were sorted from bone marrow and B220+ CD23+ mature follicular B cells were sorted from the spleens.  Plasma...", "geo_gse_id": "E-GEOD-39916", "owner_profile": "/profile/8773/arrayexpressuploader", "factor_count": 1, "sample_count": 6, "tags": ["bone", "bone marrow"], "lastmodified": "Dec.12, 2014", "is_default": false, "geo_gds_id": "", "slug": "expression-data-from-murine-bone-marrow-resident-p", "geo_id_plat": "E-GEOD-39916_A-AFFY-45", "name": "Expression data from murine bone marrow-resident plasma cells and spleen mature follicular B cells", "created": "Nov.12, 2014", "summary": "CD138+ B220- plasma cells were sorted from bone marrow and B220+ CD23+ mature follicular B cells were sorted from the spleens.  Plasma cells were sorted from C57BL/6 mice 7 days after boosting with antigen, with mice first primed with an i.p. injection of KLH/IFA followed by boost at day 21 with KLH/PBS i.p. Mature B cells were sorted from antigen-na\u00efve C57BL/6 mice. We compared expression profiles of plasma cells and mature B cells to identify differentially expressed transcripts. Seven days after boosting with KLH, plasma cells were enriched by CD138-PE/anti-PE magnetic bead enrichment and then sorted to purity.  Affymetrix microarrays were performed on 50,000-70,000 plasma cells and 2,000,000-3,000,000 na\u00efve B cells.", "source": "http://www.ebi.ac.uk/arrayexpress/experiments/E-GEOD-39916", "sample_source": "http://www.ebi.ac.uk/arrayexpress/experiments/E-GEOD-39916/samples/"}