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Ultrasonogram of abomasal ingesta (a), schematic diagram (b) and position of transducer (c). A 3.5 MHz low-frequency curvilinear transducer was placed on the ventral part in 10th ICS on the left side of a cow with LDA, homogenous hypoechoic structures with echogenic spots produced by abomasal ingesta appeared. 1-thoracic wall; 2-abomasal ingesta; 3-abomasal fold; 4-ruminal wall; Ds-dorsal; Vt-ventral; Grey spot-position of transducer
