Fig. 4

Cytological findings from ultrasound-guided, fine-needle aspiration of an abdominal mass in an alpaca. Photomicrographs a to d and g demonstrate monomorphic hepatocytes with mild vacuolar change (a, c) cell swelling (a, g), mild accumulation of tiny, blue-green, granules conistent with bile (a, c, d) and binucleation (a). Photomicrographs E and F show inflammation with increased numbers of neutrophils and mononuclear cells (e) and eosinophilis (f). Images taken using Motic BA410 microscope, Motic Moticam 10 (10.0 mp) camera and Motic Images PLUse 2.0 image processing software, all purchased from Motic Europe, Barcelona, Spain. 100 erythrocytes were measured using the Motic calibration cytometer and their mean size was found to be 6.23 μm with a standard deviation of 0.56 μm and range 4.7 to 7.7 μm. Erythrocyte size was normally distributed. A scale bar in the bottom left of each photomicrograph indicates 10 μm