Related Experiment Video
Updated: Aug 8, 2026
Using Unfixed, Frozen Tissues to Study Natural Mucin Distribution
Published on: September 21, 2012
Mucin stain on frozen sections: a rapid 3-minute method
S Soans1, L M Galindo, F U Garcia
1Department of Pathology and Laboratory Medicine, Hahnemann University Hospital, Philadelphia, PA 19102-1192, USA.
Context:
The importance of frozen-section diagnoses in the practice of pathology cannot be overemphasized. In some cases, the use of a mucin stain can greatly aid in the diagnosis. Since few methods for mucin staining have been described that can be used in the frozen-section setting, we developed one such staining procedure for mucin.
Objective:
To develop a rapid mucicarmine staining technique to be used on frozen sections that does not significantly delay overall turnaround time.
Design:
A standard mucicarmine staining technique was modified by using a concentrated mucicarmine stain and a microwave oven, to reduce the total staining time to 3 minutes or less. Frozen tissue from normal colonic mucosa was used as a control, and skin from extramammary Paget disease for evaluation of margins was used as a case.
Results:
The rapid mucicarmine stain successfully demonstrated the presence of mucin on frozen-tissue sections. Mucin stained deep rose, and the connective tissue stained green.
Conclusion:
This rapid and simple mucin staining technique can be used on frozen sections with no significant effect on the overall turnaround time, thereby aiding rapid diagnosis on frozen sections.
Insights
A new rapid mucicarmine staining method aids frozen-section diagnoses. This quick mucin stain procedure enhances pathology turnaround times for critical patient care.
Area of Science:
- Pathology
- Histology
Background:
- Frozen-section diagnoses are crucial in pathology.
- Accurate mucin staining is vital for specific diagnoses.
- Limited staining methods exist for frozen sections.
Purpose of the Study:
- To develop a rapid mucicarmine staining technique for frozen sections.
- To ensure the technique does not impede overall diagnostic turnaround time.
Main Methods:
- Modified a standard mucicarmine staining technique.
- Utilized concentrated mucicarmine stain and microwave heating.
- Reduced total staining time to 3 minutes or less.
- Employed normal colonic mucosa and extramammary Paget disease skin for testing.
Main Results:
- The rapid mucicarmine stain effectively identified mucin in frozen tissue sections.
- Mucin stained a distinct deep rose color.
- Connective tissue was stained green, providing contrast.
Conclusions:
- This rapid mucin staining technique is effective for frozen sections.
- The procedure is simple and does not significantly impact turnaround time.
- It aids in achieving faster and more accurate frozen-section diagnoses.
