Coxiella refers to a genus of Gram-negative bacteria in the family Coxiellaceae. Coxiella burnetii is the only member of this genus. It is an obligate intracellular bacterial pathogen, and is the causative agent of Q fever. Q Fever is an infectious possible biological weapons agent that in its spore-like form is resistant to heat, pressure, drying and certain antiseptics. The Hybridoma cell line secreting this monoclonal antibody was generated at Dstl Porton Down (A UK Government Agency: Defence, Science and Technology Laboratory). This monoclonal antibody is manufactured and sold under licence from Ploughshare Innovations Ltd on behalf of the Secretary of State for Defence.