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. 2021 Oct 16;275:118779. doi: 10.1016/j.carbpol.2021.118779

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© 2021 Published by Elsevier Ltd.

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 5 — (A) Inhibitory activity profiles of 375 against SARS-CoV-2 3CLpro. (B) Inhibitory activity profiles of 37502 against SARS-CoV-2 3CLpro. (C) Competitive intervention of polysaccharide 375 on S1 protein and ACE2 by ELISA. (D) Competitive intervention of polysaccharide 37502 on S1 protein and ACE2 by ELISA. (E) Binding test of polysaccharide 37502 with SARS-CoV-2 3CLpro by ITC.