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. 2021 Jul 16;12(3):307–324. doi: 10.1007/s13167-021-00247-0

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Drugs for COVID-19 therapy. (A) All 47 drugs utilized for COVID-19 therapy were divided into three categories and nine subcategories are depicted. The categories of drugs are indicated by different colours, as presented in the figure legend. (B) The whole process of virus invasion is depicted. Drugs effects in each step are listed to the side. (C) The outcomes of clinical trials of drugs for COVID-19 treatment. Green indicates that patients benefited in the clinical trial compared to the control group, while red indicates that patients did not benefit. The Y-axis indicates the number of clinical trials