Dictionaryⁱ

On the welcome page of the dictionary, four major sections are shown: Normal tissues, Cancer, Cell structure and Protein expression. Below the image of each section are links to introductory texts for i) normal tissue histology, ii) hallmarks of cancer and iii) cell cycle overview. Within each section there are direct links to histology descriptions of different tissue types and tumor forms as well as descriptions of cell structures. Furthest to the right there is a "Protein expression" section which includes a list of genes with links to examples of different protein expression patterns.

A common feature for all sections is that a general descriptive text about the tissue, tumor-type, cell structure or protein/antibody is provided when browsing a particular topic.

The aim of the dictionary is to facilitate the interpretation and use of the image-based data available in the Human Protein Atlas, but also to serve as a tool for training and understanding tissue histology, pathology and cell biology. The dictionary contains three main parts, normal tissue histology, pathology and cell structure. This dictionary covering normal tissues and pathology is based on full tissue sections stained with hematoxylin-eosin (HE) and representative high-resolution images are displayed at different magnifications. The cell atlas covers intra-cellular structures and is based on immunofluorescence and confocal microscopy images, using different color channels to highlight the organelle structure of a cell.
A fourth part of this dictionary, protein expression, shows examples of immunohistochemistry and demonstrates how well-known proteins are expressed in various cells of different tissues.