title: Presence of spirochaetes in paresis despite penicillin therapy.
mesh_terms: D001344:Autopsy; D002555:Cerebrospinal Fluid / Q000382:microbiology; D005625:Frontal Lobe / Q000382:microbiology; D006801:Humans; D008099:Liver / Q000382:microbiology; D008297:Male; D008875:Middle Aged; D009494:Neurosyphilis / Q000188:drug therapy*; D010291:Paresis / Q000382:microbiology* / Q000473:pathology; D010403:Penicillin Resistance; D010406:Penicillins / Q000008:administration & dosage / Q000627:therapeutic use; D013587:Syphilis / Q000188:drug therapy; D014210:Treponema pallidum / Q000302:isolation & purification*
chemical_list: D010406:Penicillins