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: ["HealthCareActivity", "InjuryOrPoisoning", "BodySubstance", "IntellectualProduct", "AnatomicalStructure", "SpatialConcept", "Chemical", "Bacterium", "MedicalDevice", "Organization", "BiomedicalOccupationOrDiscipline", "Finding", "BiologicFunction", "Virus", "ResearchActivity", "ClinicalAttribute", "PopulationGroup", "Eukaryote", "BodySystem", "Food", "ProfessionalOrOccupationalGroup"].

Please return the output as a JSON object of the format: {"Virus": ["HIV", ...], "Bacterium": ["MRSA", ...], "AnatomicalStructure": ["Lung", ...], "BodySystem": ["CNS", ...], "BodySubstance": ["Serum", ...], "Finding": ["Headache", ...], "InjuryOrPoisoning": ["Fracture", ...], "BiologicFunction": ["Death", ...], "HealthCareActivity": ["Biopsy", ...], "ResearchActivity": ["Clinical trial", ...], "MedicalDevice": ["Lenses", ...], "SpatialConcept": ["Camps", ...], "BiomedicalOccupationOrDiscipline": ["Forensic medicine", ...], "Organization": ["WHO", ...], "ProfessionalOrOccupationalGroup": ["Provider", ...], "PopulationGroup": ["Swimmers", ...], "Chemical": ["Gold", ...], "Food": ["Rice", ...], "IntellectualProduct": ["RPAM", ...], "ClinicalAttribute": ["Biomarker", ...], "Eukaryote": ["Dogs", ...]}. 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:

The use of Ocimum americanum essential oil against the pathogens Aeromonas hydrophila and Gyrodactylus sp. in silver catfish (Rhamdia quelen) The bactericidal activity (MIC-test) of Ocimum americanum (inflorescences) essential oil (OAEO) against Aeromonas hydrophila was determined in this study. It was also investigated the potential of OAEO and the main compound found in the oil (linalool) at subinhibitory concentrations to be inhibitors of hemolysis caused by Aer. hydrophila in fish erythrocytes. An in vivo experiment was conducted to evaluate survival of fish (Rhamdia quelen) experimentally infected with Aer. hydrophila and exposed to OAEO. A second experiment was conducted to evaluate the in vitro and in vivo activity of OAEO (mix from inflorescences and leaves) against the parasite Gyrodactylus sp. The OAEO showed weak in vitro activity against Aer. hydrophila (6400 μg ml(-1)). At subinhibitory concentrations OAEO (100 μg ml(-1)) inhibited hemolysis (90%) caused by Aer. hydrophila in fish erythrocytes, however, linalool did not present hemolysis inhibition activity. At low concentrations (10 and 20 mg l(-1)) added to the water OAEO promoted survival of experimentally infected fish with Aer. hydrophila. Lastly, OAEO -mix (50 mg l(-1)) was effective against Gyrodactylus sp. significantly reducing (60%) the number of parasites in the fish. This article is protected by copyright. All rights reserved.
{"AnatomicalStructure": ["erythrocytes"], "Bacterium": ["Aer. hydrophila", "Aeromonas hydrophila"], "BiologicFunction": ["hemolysis"], "BiomedicalOccupationOrDiscipline": [], "BodySubstance": [], "BodySystem": [], "Chemical": ["inhibitors", "essential oil", "OAEO", "oil", "water", "linalool"], "ClinicalAttribute": [], "Eukaryote": ["silver catfish", "Rhamdia quelen", "parasite Gyrodactylus sp.", "Gyrodactylus sp.", "parasites", "fish", "inflorescences", "Ocimum americanum", "leaves"], "Finding": ["bactericidal activity", "infected"], "Food": [], "HealthCareActivity": ["MIC-test"], "InjuryOrPoisoning": [], "IntellectualProduct": [], "MedicalDevice": [], "Organization": [], "PopulationGroup": [], "ProfessionalOrOccupationalGroup": [], "ResearchActivity": ["experiment", "experimentally"], "SpatialConcept": [], "Virus": []}