“These pathogens bind to specialized immune cells in the lining—epithelium—to elicit an immune response in the lymphoid T and ...

The human palatine tonsils have surface and crypt stratified epithelium and may be initiated via the epithelium to mount immune responses to various presenting antigens. Here we investigated the ...

These are tonsil crypts with human papillomavirus (HPV; green) in epithelial and biofilm (red) layers ('V' = biofilm; 'G' = HPV; original magnification ×20). Disclaimer: AAAS and EurekAlert!