Review
Copyright ©The Author(s) 2021.
World J Gastrointest Oncol. May 15, 2021; 13(5): 312-331
Published online May 15, 2021. doi: 10.4251/wjgo.v13.i5.312
Figure 2
Figure 2  The amount of research investigating the role of hypoxia in cancer has increased over the past 20 yr as seen as a proportion of PubMed listed articles[177].