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:

Specific NF-kappa B subunits act in concert with Tat to stimulate human immunodeficiency virus type 1 transcription. NF-kappa B is a protein complex which functions in concert with the tat-I gene product to stimulate human immunodeficiency virus (HIV) transcription. To determine whether specific members of the NF-kappa B family contribute to this effect, we have examined the abilities of different NF-kappa B subunits to act with Tat-I to stimulate transcription of HIV in Jurkat T-leukemia cells. We have found that the p49 (100) DNA binding subunit, together with p65, can act in concert with Tat-I to stimulate the expression of HIV-CAT plasmid. Little effect was observed with 50-kDa forms of p105 NF-kappa B or rel, in combination with p65 or full-length c-rel, which do not stimulate the HIV enhancer in these cells. These findings suggest that the combination of p49 (100) and p65 NF-kappa B can act in concert with the tat-I gene product to stimulate the synthesis of HIV RNA.
{"CellLine": [], "CellType": ["Jurkat T - leukemia cells"], "DNA": ["HIV - CAT plasmid", "HIV enhancer"], "Protein": ["rel", "protein complex", "NF - kappa B family", "these cells", "Tat - I", "NF - kappa B subunits", "p105", "p49 (100) DNA binding subunit", "Tat", "p65", "the tat - I gene product", "full - length c - rel", "p49 (100)", "50 - kDa forms", "NF - kappa B", "tat - I gene product"], "RNA": ["HIV RNA"]}