You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["RNA", "CellLine", "Protein", "DNA", "CellType"].

Please return the output as a JSON object of the format: {"DNA" : ["TAL1", ...], "RNA": ["mRNAs", ...], "CellLine": ["T cells", ...], "CellType": ["monocytes", ...], "Protein": ["IL-2", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

c-myc mRNA expression in minor salivary glands of patients with Sjogren 's syndrome. c-myc protooncogene is implicated in the pathogenesis of B cell lymphoid malignancies and high levels of c-myc mRNA expression are observed in activated blood mononuclear cells. Sjogren 's syndrome (SS) is characterized by lymphocytic infiltrates of exocrine glands, remarkable B cell hyperreactivity and a strong predisposition to B cell neoplasia. In this study, c-myc protooncogene mRNA expression in 29 labial minor salivary gland biopsies from patients with primary SS and 15 controls was examined using in situ hybridization histochemistry. Two 40mer oligonucleotides from the 1st and the 2nd exon of the c-myc gene, labeled with 35S, were used as probes. To detect the origin of the cell hybridized with a c-myc probe, a combined immunochemistry in situ hybridization histochemistry technique was used. High c-myc mRNA expression was detected on acinar epithelial cells. c-myc did not correlate with c-fos and c-jun protein expression. Stronger c-myc mRNA expression was detected in labial salivary glands of patients with longer disease duration (p less than or equal to 0. 002) and more intense T lymphocyte infiltrates (p less than 0. 05) although these patients revealed no hypergammaglobulinemia. No correlation was observed between c-myc mRNA and B lymphocyte monoclonicity or lymphoma. In conclusion, strong c-myc mRNA expression was observed on epithelial cells of labial salivary glands from patients with primary SS. Our findings may indicate the presence of a reactivated virus hosted in these cells.
{"CellLine": [], "CellType": ["T lymphocyte infiltrates", "activated blood mononuclear cells", "acinar epithelial cells", "lymphocytic infiltrates", "epithelial cells"], "DNA": ["c - myc protooncogene", "c - myc probe", "1st and the 2nd exon", "c - myc gene"], "Protein": ["c - myc", "c - jun", "c - fos"], "RNA": ["c - myc mRNA", "c - myc protooncogene mRNA"]}