title: Effect on the infectivity of various viruses by the intestinal factor of normal mice which inactivates murine hepatitis virus.
mesh_terms: D000818:Animals; D004770:Enterovirus / Q000187:drug effects*; D029822:Enterovirus B, Human / Q000187:drug effects*; D006367:HeLa Cells; D007421:Intestine, Small; D051379:Mice; D006517:Murine hepatitis virus / Q000187:drug effects*; D009522:Newcastle disease virus / Q000187:drug effects*; D009975:Orthomyxoviridae / Q000187:drug effects*; D017955:Poliovirus / Q000187:drug effects*; D012412:Rubella virus / Q000187:drug effects*; D013539:Simian virus 40 / Q000187:drug effects*; D014020:Tissue Extracts / Q000494:pharmacology*
chemical_list: D014020:Tissue Extracts