Calnek, B W Feather follicle epithelium: a source of enveloped and infectious cell-free herpesvirus from Marek's disease. [electronic resource] - Avian diseases May 1970 - 219-33 p. digital Publication Type: Journal Article ISSN: 0005-2086 Subjects--Topical Terms: AnimalsAvian Leukosis--immunologyCell-Free SystemChickensCulture TechniquesEpithelium--microbiologyFeathers--microbiologyFluorescent Antibody TechniqueHerpesviridae--isolation & purificationHerpesviridae Infections--microbiologyMicroscopy, ElectronVirus Cultivation