How to apply an antibody towards certain protein for histopathology or histochemistry in determining the location of the protein synthesis site in parts of the organ.
using antibody to be stained (immunostaining) in Fluorescent in situ Hybridization (FISH/ISH) technique is common for detecting the position of protein in a cell or tissue sample. There are commercial protein and antibody labelling reagents available, and just need to know further what sort of specific proteins in crustacean species you are going to assess.