Figure 1.
Major subsets of O2-sensing cells: proportions of the total number of 322,442 publications per subgroup. Top panel: relative numbers of citations per subgroup in July 2014. This comparison addresses four major subgroups of O2-sensing cells: cardiac muscle/cardiomyocytes, vascular smooth muscle (VSM)/myocytes, carotid body/glomus cells, and pulmonary neuroendocrine cells (PNECs)/neuroepithelial bodies. Actual numbers are given in the text. Lower panel: when citations including the keyword “cancer” are excluded, the number of citations is decreased per subset by 3–21% for cardiac muscle, vascular smooth muscle, and carotid body, but is decreased 74% for PNECs. (Mary E. Sunday, original unpublished data)