They were easy to rehydrate. No odors (or minimal alcohol odor). Even some of the non formalin samples have some residual odor. There was a good division between males and females.
After the rehydration the organs were very easy to identify; including the stomach contents (which was a big hit) as well as the eggs. This was a class of beginning biology students and they really enjoyed this project. So much so that we are doing it again this year.
Freeze-dried grassfrogs. Available in vacuum packs.
Our freeze-dried specimens, which use no chemicals, can be rehydrated in 10% alcohol for dissection.
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