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:

Demonstration of a 1, 25-dihydroxyvitamin D3-responsive protein in human lymphocytes: immunologic crossreactivity and inverse regulation with the vitamin D receptor. Using Western blot analysis with a monoclonal antibody recognizing a 17-amino acid epitope of the 1, 25-dihydroxyvitamin D3 [ 1, 25 (OH) 2D3 ] receptor, we have detected two crossreacting proteins in activated normal human lymphocytes. The smaller of the two proteins (50 kDa) was indistinguishable from the classical 1, 25 (OH) 2D3 receptor and, similar to the classical 1, 25 (OH) 2D3 receptor, was upregulated in a dose-dependent fashion by 1, 25 (OH) 2D3. The larger crossreacting protein exhibited an electrophoretic mobility of 80 kDa, was localized in the cell cytosol, and appeared to be specific for activated lymphocytes since it was not detected in several other human cells including monocytes. More strikingly, the 80-kDa protein was downregulated in a dose-dependent fashion by 1, 25 (OH) 2D3; this effect was independent of the mode of lymphocyte activation and specific for the 1, 25 (OH) 2D3 metabolite of vitamin D3. However, two potent immunosuppressive agents, glucocorticoids and cyclosporin A, also inhibited the 80-kDa protein.
{"CellLine": [], "CellType": ["monocytes", "activated normal human lymphocytes", "activated lymphocytes", "human lymphocytes", "human cells"], "DNA": [], "Protein": ["1 , 25 - dihydroxyvitamin D3 [ 1 , 25 (OH) 2D3 ] receptor", "17 - amino acid epitope", "crossreacting proteins", "80 - kDa protein", "80 kDa", "vitamin D receptor", "1 , 25 (OH) 2D3 receptor", "monoclonal antibody", "1 , 25 - dihydroxyvitamin D3 - responsive protein", "50 kDa"], "RNA": []}