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: ["Disease", "Chemical"].

Please return the output as a JSON object of the format: {"Chemical" : ["Naloxone", ...], "Disease" : ["Hypotensive", ...]}. 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:

Fatal aplastic anemia due to indomethacin--lymphocyte transformation tests in vitro. Although indomethacin has been implicated as a possible cause of aplastic anemia on the basis of a few clinical observations, its role has not been definitely established. A case of fatal aplastic anemia is described in which no drugs other than allopurinol and indomethacin were given. Indomethacin was first given four weeks prior to the onset of symptoms. A positive lymphocyte transformation test with indomethacin in vitro further substantiates the potential role of this drug in causing aplastic anemia in a susceptible patient. Fortunately, this seems to be a very rare complication.
{"Chemical": ["Indomethacin", "allopurinol", "indomethacin"], "Disease": ["aplastic anemia"]}