The Hydroalcoholic Extract of Uncaria tomentosa (Cat’s Claw) Inhibits the Infection of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) In Vitro

Figure 2

Antiviral activity in vitro of the U. tomentosa extract against SARS-CoV-2 by plaque assay. (a) The figure represents the viral titer (PFU/mL) of supernatants harvested after the treatment with the U. tomentosa extract quantified by plaque assay (n = 4). Chloroquine (CQ) was used as an inhibition positive control of the antiviral strategy. , , and (b) Representative plaques of the antiviral evaluation of the U. tomentosa extract against SARS-CoV-2 on Vero E6 cells.

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