(D) 293T cells expressing ACE2 were infected with SARS-CoV-2 in presence or absence of antibodies against ACE2, UF heparin (250 IU/mL) or LMWH enoxaparin (250 IU/mL) and infection was determined after 3 days by luciferase reporter activity. Data information: Data show the mean values and error bars are the SEM. Statistical analysis was performed using ordinary one-way ANOVA with Dunnett's multiple-comparison test. *P≤0.05,**P≤0.01 (n=3 measured in triplicates). RLU: relative light units. 