“…Thus, the chemical reactivity of the cured resin, its method of curing and the degree of crosslinking are important parameters (Causton, 1984). Acrylate resins, such as Lowicryl K4M (Roth et al, 1981;Armbruster et al, 1982Armbruster et al, , 1983Carlemalm et al , 1982Carlemalm et al , , 1985Altman et al, 1984;Kellenberger et al, 1987) and LR White (Newman et al, 1982(Newman et al, , 1983aCraig and Miller, 1984;Newman and Jasani, 1984;Newman and Hobot, 1987), have some advantages for postembedding staining over epoxy resins. They are hydrophilic and tolerate water during polymerization, hence dehydration of specimens need not be so stringent.…”