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'organization.': [80], 'These': [81], 'data': [82], 'suggest': [83], 'Pitx3-dependent': [85], 'gene': [86], 'for': [91], 'differentiation': [93], 'progenitors': [96], 'within': [97], 'system.': [101]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2068602040', 'counts_by_year': [{'year': 2024, 'cited_by_count': 1}, {'year': 2023, 'cited_by_count': 6}, {'year': 2022, 'cited_by_count': 10}, {'year': 2021, 'cited_by_count': 8}, {'year': 2020, 'cited_by_count': 18}, {'year': 2019, 'cited_by_count': 9}, {'year': 2018, 'cited_by_count': 11}, {'year': 2017, 'cited_by_count': 10}, {'year': 2016, 'cited_by_count': 12}, {'year': 2015, 'cited_by_count': 22}, {'year': 2014, 'cited_by_count': 25}, {'year': 2013, 'cited_by_count': 26}, {'year': 2012, 'cited_by_count': 27}], 'updated_date': '2024-09-19T14:52:42.460652', 'created_date': '2016-06-24'}