"DOID:4156"^^ . _:vb50952718 . . "Symptomatic early syphilis"@en . "SNOMEDCT_US_2021_09_01:186846005"^^ . _:vb50952718 . "ICD9CM:091"^^ . _:vb50952718 . "early syphilis, symptomatic"@en . "disease_ontology"^^ . . "primary syphilis"^^ . . . "A syphilis that is the first stage of syphilis, marked by the development of a chancre, which is characterized by mononuclear leukocytic infiltration, macrophages, and lymphocytes."^^ . . _:vb50952718 . "UMLS_CUI:C0153139"^^ . "early symptomatic syphilis"@en . _:vb50952718 .