<prompt> KLB is another name forCorynebacterium diphtheriaCorynebacterium pseudodiphtheriaeCorynebacterium tetaniAnthrax  <response>: Diphtheria bacilli were first observed and described by Klebs in 1883 and first cultivated by Loeffler in 1884 - hence called Klebs- Loefflers bacilli or KLB. Reference: Textbook of Microbiology; Anathanarayan and panickers; 10th edition; Page no: 239 