Fig. 4From: A comprehensive evaluation of an ELISA for the diagnosis of the two most common ascarids in chickens using plasma or egg yolksQualitative comparison of the ELISA with FECs using naturally infected animals from the field. A mosaic plot of the field data representing two-way percentages of false negative (FN) and true positive (TP) cases for naturally infected hens identified with faecal egg counts (FEC) and ELISABack to article page