Fig. 1From: Analysing biomarkers in oral fluid from pigs: influence of collection strategy and age of the pigDevices used for oral fluid collection and extraction into tubes. Cotton ropes were hung at shoulder height and later squeezed to a tube container (A); sponges were held with a forceps and later transferred to a Salivette tube (Sarstedt®, Nümbrecht, Germany) with a funnel (B)Back to article page