B-negative

B-negative was a Human blood type. 
This blood type was one of the two (the other being AB-positive) remaining blood types was required to get for Damron, in order for the Xindi-Reptilian to synthesize a virus for their bio-weapon, which required samples of all eight types of Human blood to be properly calibrated. Once Loomis provided Damron with a patient having this blood type, he would have been paid double the bounty they originally offered him. 
Captain Archer told and T'Pol that his blood type was B-negative, and hoped to use this fact to his advantage in stopping the Xindi. () 
Julian Bashir also had type B-negative blood. He shared that information in 2373, following a blood screening to prove he was who he said he was. ()
Category:Physiology