<prompt> Growth on a cell-free aificial solid medium is possible for following except -Ureaplasma urealyticumMycoplasma PneumoniaeC L form of proteus vulgarisChlamydia  <response>: They are bacteria but may be considered as viruses on account of their filterability and failure to grow in cell-free culture media. REF: Textbook of microbiology Ananthanarayan, and Paniker. Page no.: 415 