D011969Chemicals & DrugsD12.776.543.750.670.450.300D12.776.543.750.695.350D12.776.543.750.720.480.300Receptors, Histamine H1prns:meshDescriptorUIMeSH DescriptorUIprns:meshSemanticGroupNameMeSH semantic group nameprns:meshTreeNumberMeSH tree numberrdf:typetyperdfs:labellabelConcept