Figure 1B (IMAGE) Shinshu University Caption Thionin staining of embryos 8 days after oviposition in DW-injected silkworms and 60 days after oviposition in DH-injected and PTX-injected silkworms in wt of N4 strain. (Scale bar: 200μm) Credit Copyright 2020, PNAS, Licensed under CC BY 4.0 Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.