And Mummification Techniques

INFILTRATION TECHNIQUES Plastination (see above) can be used as an infiltration method which provides excellent specimens. This is the method of choice if one wants to prepare dry samples that can be handled similar to fresh specimens, without the need of gloves or risk of infection.

Infiltration of organs with paraffin and other substances can be accomplished without special commercial additives; the techniques permit permanent preservation of dry specimens (11). The infiltration methods are quite time-consuming but the paraffinized organs, e.g., hearts with chronic valvular disease, are very instructive and pleasant to handle. However, with the possible exception of plastination, little need appears to remain for such specimens and therefore, the technical aspects of paraffin infiltration that were illustrated in the last edition, shall not be described here again.

MUMMIFICATION TECHNIQUES Mummification of organs is the simplest and oldest preservation technique. Mummification of whole bodies is described by Evans (12). Shrinkage and loss of material for histologic study are the main disadvantages of organ mummification. This type of dry preservation is best applied to lungs (see Chapter 4) and intestines (see Chapter 5).

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