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'either': [101, 148], 'number': [103], 'AChR': [105, 112], 'clusters': [106], 'or': [107, 156, 172], 'phosphorylation': [109], 'induced': [113], 'picomolar': [115], 'concentrations': [116], 'agrin.': [119], 'These': [120], 'results': [121], 'indicate': [122], 'neural,': [124], 'but': [125], 'not': [126, 152], 'muscle,': [127], 'interacts': [129], 'with': [130], 'receptor.': [133], 'Muscle': [134], 'did': [136], 'binding': [139, 169], 'isolated': [144], 'α-dystroglycan,': [145], 'however,': [146], 'suggesting': [147], 'is': [151, 190, 195], 'its': [158], 'properties': [159], 'membrane': [162], 'are': [163], 'altered.': [164], 'Direct': [165], 'assay': [166], 'myotubes': [177], 'only': [179], 'low-affinity': [180], 'binding.': [181], 'conclude': [183], 'high-affinity': [192], 'highly': [196], 'specific': [197], 'form.': [201]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W1866806986', 'counts_by_year': [{'year': 2024, 'cited_by_count': 1}, {'year': 2022, 'cited_by_count': 1}, {'year': 2021, 'cited_by_count': 2}, {'year': 2014, 'cited_by_count': 1}], 'updated_date': '2024-08-14T15:22:44.790262', 'created_date': '2016-06-24'}