California Tumor Tissue Registry
- Offering seminars, subscriptions and a case of the month.
- http://www.cttr.org/

The Lab Rat
- A basic introduction to the technical aspects of histopathology.
- http://www.rat-hole.org/

Webpathology.com
- Photomicrographs of urological tract diseases are accompanied by descriptions of the histological features.
- http://www.webpathology.com/

Interactive Diagnostic Gynecologic Pathology
- Short photographic quizzes about uterine and ovarian diseases are used to promote a software package for continued education.
- http://www.obgynpath.com/

Cooperative Human Tissue Network
- Supported by the National Cancer Institute, this organisation co-ordinates the collection, preservation and distribution of human tissue for research throughout the United States. Methods, costs and contact details are given.
- http://www-chtn.ims.nci.nih.gov/