“…Of three P. haemolytica iron-regulated proteins isolated by bovine transferrin affinity chromatography [69], the 71-and 100-kDa proteins are likely to be the same proteins observed to be present in the cell envelopes of a P. haemolytica strain, pathogenic for sheep, recovered without subculture from the pleural cavity of an infected lamb [24] and from chambers implanted into the intraperitoneal cavities of sheep [95]. The 100-kDa protein suggested to be equivalent to the TBP1 ofH.…”