Standard Tissue Collection for Immersion Fixation

• Most fixatives penetrate very slowly. No fixative will penetrate more then 2-3 mm of solid tissue in 24 hours. Most specimens should be no more than 4 mm for good fixation, and 3 mm is preferable.
• If you are working with whole brains, large tumors, or some large organ pieces, standard-sized tissue pieces may not be big enough for your work. If you are not sure, we can help you decide how large your tissue should be.
• If you must cut sections thicker than 4 mm, do not use standard-sized cassettes. Standard-sized cassettes will squeeze larger samples and cause under-processing. If you need larger cassettes, come by our lab and we will supply you with them.

• Researchers are responsible for their choice of fixative and fixation time. Our lab supplies at no extra cost 10% Neutral-Buffered Formalin and Davidson's fixative.
• If tissues are submitted still in fixative, our lab will not be responsible for fixation time.
• Be sure to follow the standard tissue submission procedure.

If you have any questions, contact us at:

Tel: (979) 845-3177 Fax: (979) 458-3499