Moist preparation

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Wet preparation of an emperor perch ( Hoplostethus atlanticus ) in the Melbourne Museum

A moist preparation (also called wet preparation , if stored in alcohol (predominantly in ethanol ) also alcohol preparation ) is probably the best-known form of preparation . It represents an anatomical structure (e.g. an organ ) in a storage solution in a specimen glass or specimen box. The anatomical structure is shown extremely lifelike. Whitening preparations are a special form of moist preparations . These preparations are particularly important in teaching and display collections , which is why there have recently been international discussions about the preservation and care of such collections.

Manufacturing

A wet preparation is made by fixing a biological structure (such as an organ or a fetus, for example ) with a solution and then displaying it in a storage solution in a preparation glass or a preparation box . For this purpose, moist specimens are often assembled and then placed in an appropriate container. A special form of fixation and storage of wet specimens takes place through color-preserving fixations according to Jores or Kaiserling (solutions with the most frequent use), in which the colors are almost faithfully restored with the aid of a restitution liquid. Another special method is to lighten the specimen and adjust the storage solution to the same refractive index as the specimen.

literature

  • Rudolf Piechocki, Hans-Jürgen Altner: Macroscopic preparation technique, part 1: vertebrates. 5th, revised and updated edition. Gustav-Fischer-Verlag, 1998, ISBN 978-3437351907 .
  • Siegfried Schwerin: Anatomical dry, wet and bone preparations, Springer-Verlag, 1952, ISBN 978-3662304662 .
  • Walter F. Steinmann: Macroscopic preparation methods in medicine, Thieme-Verlag, 1982, ISBN 978-3136239018 .

Individual evidence

Commons : Wet specimens  - album with pictures, videos and audio files
  1. ↑ KAISERLING, C .: About the conservation and installation of pathological-anatomical specimens for exhibition and teaching collections. In: Verh. Dt. Path. Ges. 2 (1900), pp. 203-217
  2. ↑ MEIER, C. / WECHSLER, K .: wet collections: current state of knowledge. In: The preparator 2011, Association of German taxidermists eV (ed.), Pp. 88–95, ISSN  0032-6542
  3. ↑ JORES, L .: The preservation of anatomical specimens in blood color using formalin. In: Zbl. Path. Jena 7 (1896), p. 134
  4. ↑ KAISERLING, C .: About the conservation of specimens from collections with the preservation of natural colors. In: Clin. Wschr. 33 (1896), p. 725
  5. ↑ SPALTEHOLZ, W .: About making human and animal preparations transparent and its theoretical conditions . Along with appendix: About bone staining. Hirzel, Lpz. 91 pp., 1914.