When dehydration is avoided, for histochemical and enzyme studies.
Gelatin.
Used for impregnation without prior clearing of the tissue.
Ester wax.
For large dense tissue blocks like bones and brain.
Paraplast.
For embedding eyes.
Embeddol
Suitable for enzyme histochemical studies.
Carbowax.
For tissues with large hollow cavities and for hard and dense tissue like
bones and teeth.
Celloidin.