Need for repeated microscopical tests in gonorrhoea.
D003486:Cyanides; D006069:Gonorrhea; D006301:Health Services Needs and Demand; D006801:Humans; D017669:Mercury Compounds; D008853:Microscopy
D003486:Cyanides; D017669:Mercury Compounds; C040189:mercuric cyanide
GONORRHEA; MERCURIC CYANIDE