Fig. 4From: Dual monoclonal antibody-based sandwich ELISA for detection of in vitro packaged Ebola viruseVLPs were assessed by IFA. pEAK13-GP and pCD-VP40 were cotransfected to HEK-293 T, at 48 h of transfection, the supernatants were subject to electron microscope scan. a. The typical filavirus formation was observed. The arrowheads indicated virus membrane. b. The IFA results indicated that mAbs 3F21 and 6E3, like positive control 2G4, bound to eVLPsBack to article page