title: Sensitivity to histoplasmin among the population of some areas in the USSR.
mesh_terms: D000818:Animals; D006659:Histoplasmin; D006660:Histoplasmosis / Q000175:diagnosis* / Q000453:epidemiology; D006801:Humans; D008403:Mass Screening; D051379:Mice; D012882:Skin Tests; D012988:Soil Microbiology; D014586:USSR
chemical_list: D006659:Histoplasmin