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:

Comparative kinematic gait analysis in young and old Beagle dogs Age-related involution in dogs involves loss of muscle mass and changes in connective tissue and articular cartilage. The aim of this study was to examine whether an age-related influence on joint mobility can be detected in the absence of diseases. Five young (Ø 2.0 years) and five old (Ø 10.4 years) healthy and sound Beagle dogs were measured during locomotion on a treadmill by computer-assisted gait analysis. Angles of the shoulder, elbow, carpal, hip, stifle and tarsal joints were analyzed, including joint angle progression curves, minimum and maximum joint angles and range of motion (ROM). The old group showed a smaller maximum joint angle (p = 0.037) and ROM (p = 0.037) of the carpal joint and similar tendencies in the shoulder, elbow and carpal joint. The descriptive analysis of the progression curves revealed less flexion and extension of the joints of the forelimb. This indicates restricted joint mobility of the forelimb but primarily of the carpal joint. Findings in the joints of the hindlimb were not consistent; contrasting alterations may be due to a compensatory mechanism. As most alterations were found in the distal joints, these should receive particular attention when examining elderly dogs.
{"AnatomicalStructure": ["articular cartilage", "hindlimb", "connective tissue"], "Bacterium": [], "BiologicFunction": ["locomotion", "involution", "diseases", "particular attention"], "BiomedicalOccupationOrDiscipline": [], "BodySubstance": [], "BodySystem": [], "Chemical": [], "ClinicalAttribute": ["range of motion", "ROM"], "Eukaryote": ["dogs", "elderly dogs", "Beagle dogs", "sound Beagle dogs"], "Finding": ["loss of muscle mass", "less flexion", "detected", "examine", "found"], "Food": [], "HealthCareActivity": ["gait analysis", "kinematic gait analysis"], "InjuryOrPoisoning": [], "IntellectualProduct": ["descriptive analysis"], "MedicalDevice": [], "Organization": [], "PopulationGroup": [], "ProfessionalOrOccupationalGroup": [], "ResearchActivity": ["analyzed"], "SpatialConcept": ["Angles", "angle", "distal joints", "joints", "shoulder", "joint", "forelimb", "elbow", "carpal", "tarsal joints", "angles", "carpal joint", "stifle", "hip"], "Virus": []}