Jim Darley at Microscopy Plus at Thuringowa in Australia reports: >>I 
experienced mysterically appalling fixation in a student's project some time 
ago. On "cross-examination" I found that the student had "made sure" of good 
preservation by freezing the specimen after primary fixation.<<

Recalls the time around 1966 when I was an Army pathologist in a regional 
laboratory serving many distant posts. One day we received a "cold nodule" of 
the thyroid which the submitting facility had carefully sent us on dry ice!

Bob Richmond
Samurai Pathologist
Knoxville, Tennessee USA