Barbara Young, MB, BChir, PhD, MRCP (UK), FRCPA, is Director of the Anatomical Pathology Service, Hunter Area Pathology Service at Hunter New England Health and Conjoint Associate Professor in the School of Medicine and Public Health at the University of Newcastle in New South Wales, Australia. She is a co-author of Wheater’s Functional Histology: A Text and Color Atlas, 6th Edition and Wheater’s Basic Pathology: A Text, Atlas and Review of Histopathology, 5th Edition.