We're preparing for an experiment in our classroom and my teaching partner and I are at different points in the unit. I am concerned that the experiment will be less successful because of the freshness of the eyes. How long can they eyes be stored in the fridge before they have to be dissected and is freezing them an option?
you can keep the samples in 4 degrees. Sometimes, in certain tissues, formaldehyde preservation makes them brittle. Or sometimes it makes certain slimy tissues easy to dissect. Nonetheless, it wont damage the morphology. And if you are not interested in protein/RNA isolation, then you can store the tissue as long as you want.