<prompt> True about primary chancre -Painless ulcerPainless lymphadenopathyCovered with exudateAll  <response>: Ans. is a i.e., Painless ulcer; b i.e., Painless lymphadenopathy; c i.e., Covered with exudate Features of Primary Sore Chancre of syphilis I. Single lesion Painless Inducated base Associated with painless lymphadenopathy, bilateral. Exudation with discharging serous fluid. Option e is slightly tricky. Spirochetes are abundant in the lesions of primary and secondary syphilis. So, organism can be isolated from chancre. But, as you all know, T. pallidum cannot be cultivated in aificial culture media. 