Fig. 4
From: Long-term culture of chicken tracheal organoids for the purpose of avian influenza virus research
Similar attachment pattern of avian and human influenza viruses to CTO-derived 2D cultures and chicken trachea. Virus binding of H5N1 HPAIV and human H3N2 influenza virus to CTO-derived 2D cultures, adult chicken trachea, ferret nasal turbinates and cat lung was assessed by virus histochemistry. Ferret and cat respiratory tissues were included as positive control for binding of human and avian viruses, respectively. Representative images of two repetitions with red staining indicating binding of FITC-labelled virus and hematoxylin as counterstain. Pictures were taken at a magnification of 400