title: Screening out a virus-like agent from the testicular suspension of the Nichols pathogenic T. pallidum with observations on certain characteristics of the agent.
mesh_terms: D000208:Acute Disease; D000818:Animals; D003080:Cold Temperature; D005374:Filtration; D006358:Hot Temperature; D007109:Immunity; D008198:Lymph Nodes / Q000382:microbiology; D008297:Male; D008851:Micropore Filters; D009584:Nitrogen; D011817:Rabbits; D013587:Syphilis / Q000276:immunology; D013737:Testis / Q000382:microbiology*; D013997:Time Factors; D014210:Treponema pallidum / Q000302:isolation & purification*; D014713:Viruses, Unclassified / Q000302:isolation & purification*
chemical_list: D009584:Nitrogen