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. 2021 Aug 17;100:108076. doi: 10.1016/j.intimp.2021.108076

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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. 4 — Bar graphs show the serum and CSF levels of CCL2 (A), CCL3 (B), CCL4 (C), CCL5 (D), CCL7 (E), CCL12 (F), CXCL8 (G), and CX3CL1 (H) in COVID-19 patients with NS and COVID-19 patients without NS. The concentration of chemokines was measured using ELISA method. The Mann-Whitney U test was used to compare the data between two groups. Data are presented by mean ± SD of the results from 10 cases in each group (NS; Neurologic syndrome, ns; non-significant, * shows a P < 0.5 ** shows a P < 0.01, *** shows a P < 0.001, **** shows a P < 0.0001).