<prompt> Sulphur granules are composed ofOrganismsLeucocytesErythrocytesKeratinocytes  <response>: 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 - sun Ray appearance antigen antibody complex . Ref: Textbook of Microbiology, Ananthanarayan and Paniker; 9th edition 