Fig. 1. Cytotoxicity (CC50) and antiviral activity (IC50) for C. papaya total methanol extract and its fractions in Vero-E6 cells and against NRC-03-nhCoV in Vero-E6 cells, respectively. The CC50 and IC50 values were calculated using nonlinear regression analysis of GraphPad Prism software (version 5.01) by plotting log inhibitor versus normalized response (variable slope).
