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. 2020 Aug 31;130(10):5235–5244. doi: 10.1172/JCI138759

Figure 2. Kinetics of IgM and IgG responses against SARS-CoV-2 in severely and mildly ill patients.

Figure 2

IgM (A) and IgG (B) antibody responses against the N protein of SARS-CoV-2 in plasma were detected. Serial plasma samples were collected from 12 severely ill and 11 mildly ill patients infected with SARS-CoV-2. Forty-eight plasma samples previously collected from healthy volunteer donors in 2017–2018 were used as a healthy donor group (HD). Positive (PC) and negative (NC) controls provided by detection kit were included to ensure test validity.