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Geoffrey Rolls

Geoffrey Rolls

BAppSc, FAIMS

Geoffrey Rolls is a Histology Consultant with decades of experience in the field. He is a former Senior Lecturer in histopathology in the Department of Laboratory Medicine, RMIT University in Melbourne, Australia.

Published Pieces by Geoffrey Rolls

Artifacts in Histological and Cytological Preparations

Download this publication to learn more about the various artifacts which may be encountered in histopathology. 

Introduzione alla processazione dei campioni

"Tissue processing” describes the steps required to take animal or human tissue from fixation to the state where it is completely infiltrated with a suitable histological wax and can be embedded ready for section cutting on the microtome.

Panoramica sulla colorazione E&E: Guida alle buone pratiche

For routine diagnosis, the use of Hematoxylin and Eosin (H&E) is by far preferred for viewing cellular and tissue structure detail by pathologists. 

Immunoistochimica: Panoramica + Procedure per una migliore colorazione IHC

Immunohistochemistry (IHC) is used in histology to detect the presence of specific protein markers that can assist with accurate tumor classification and diagnosis. This article provides an overview and the basic steps used to create an optimal IHC stain.

Process of Fixation and the Nature of Fixatives

Fixation is a critical step in the preparation of histological sections. If it is not carried out under optimal conditions or if fixation is delayed, a tissue specimen can be irreversibly damaged. No matter how much care is subsequently taken in tissue...