Frozen section histopathology and preanalytical factors affecting nucleic acid integrity in biobanked fresh-frozen human cancer tissues.

Summary: When scientists save bits of cancer tumors in freezers to study later, they need the DNA and RNA inside to stay healthy. This study looked at 102 frozen samples from colon, liver, and kidney cancers to see if freezing them for a long time or waiting to freeze them caused damage. Good news! The DNA and RNA stayed in great shape even after long storage. They also found that tumors packed with more cancer cells had better RNA, while tumors with lots of swelling or mucus had worse RNA. This helps scientists know how to best keep these important samples safe for future cancer research.