Extracting for SEM
Often scientists are interested in only a part of the studied specimen, ie. the teeth of a snail, so our job in the SEM lab is to remove the wanted part from the specimen and prepare for SEM viewing.
To extract the part we can use various ways. One way is to simply cut and pull the wanted part carefully away from the body. (a manual dissection ) Another way is to use chemicals which eat away the soft body material leaving only the wanted hard bodied sections (the exoskeleton, the snails teeth).
Colin Macgregor , Manager, Materials Conservation