<prompt> Sulphur granules in actinomycosis consists of -NeutrophilsMacrophasesOrganismsEosinophils  <response>: Ans. is c i.e., Organisms o The diagnosis is most commonly made by microscopic identification of sulphur granules an in-vivo matrix of bacteria calcium phosphate, and host material. - Harrison 18e 1329o The sulfur granules are bacterial colonies and will be found to consist of a dense network of thin Gram positive filaments, surrounded by a peripheral zone of swollen radiating club shaped structures, presenting a sun ray appearance. The clubs are believed to be antigen - antibody complexes. 