Assertion: chancroid's ulcer | /r/HasProperty | staining material
Facets:
value: from the ulcer
type: OTHER
Source sentences:
text: An infectious, painful, ragged venereal ulcer at the site of infection by Haemophilus ducreyi, beginning after an incubation period of 3–7 days; seen more commonly in men; gram-negative streptobacilli may be identified by staining material from the ulcer.