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:

Activation of the human immunodeficiency virus type 1 enhancer is not dependent on NFAT-1. The function of a putative NFAT-1 site in the human immunodeficiency virus type 1 enhancer has been analyzed. Activation by the T-cell antigen receptor is minimal in Jurkat cells and is mediated by the kappa B sites. The putative NFAT-1 region is not required for the response to anti-CD3 or to mitogens in T-cell, B-cell, or monocyte / macrophage leukemia lines, nor is it a cis-acting negative regulatory element.
{"CellLine": ["monocyte / macrophage leukemia lines", "T - cell", "B - cell", "Jurkat cells"], "CellType": [], "DNA": ["putative NFAT - 1 region", "putative NFAT - 1 site", "NFAT - 1", "kappa B sites", "cis - acting negative regulatory element", "human immunodeficiency virus type 1 enhancer"], "Protein": ["anti - CD3", "NFAT - 1", "mitogens", "T - cell antigen receptor"], "RNA": []}