Neutrophils as one of the major haptoglobin sources in mastitis affected milk I-Hsiang Lai, Jung Hsu Tsao, Yi Ping Lu, Jai Wei Lee, Xin Zhao, Feng Lin Chien and Simon J.T. Mao Vet. Res., 40 3 (2009) 17 Published online: 19 December 2008 DOI: 10.1051/vetres:2008055