Inter-alpha-trypsin inhibitor heavy chain 4 (ITIH4) in saliva of pigs: evaluation of two commercially available ELISA kits for its measurement and distribution of its main components - Alba Ortín-Bustillo; Silvia Martínez-Subiela; José Joaquín Cerón; Antonio González-Bulnes; Asta Tvarijonaviciute; Alberto Muñoz-Prieto (PLoS ONE, 2025)