Model : 155

Embedded specimen of Earthworm

embedded specimen refers to a biological or scientific sample that has been preserved within a solid medium, typically for purposes such as study, display, or education. This embedding process involves encasing the specimen in a substance that supports its structure and allows for detailed examination. Here's an overview of common embedding techniques:

???? Common Embedding Techniques

1. Paraffin Embedding

   • Purpose: Primarily used in histology for preparing tissue samples for microscopic examination.

   • Process:

     1. Fixation: Preserves tissue structure.

     2. Dehydration: Removes water from tissues.

     3. Clearing: Replaces alcohol with a substance like xylene.

     4. Infiltration: Tissue is infiltrated with molten paraffin wax.

     5. Embedding: Tissue is placed in a mold with fresh paraffin and allowed to solidify.

   • Applications: Suitable for most tissue types, especially for light microscopy .

2. Resin (Epoxy) Embedding

   • Purpose: Used for electron microscopy and detailed structural analysis.

   • Process:

     1. Fixation: Preserves tissue structure.

     2. Dehydration: Removes water from tissues.

     3. Infiltration: Tissue is infiltrated with resin.

     4. Polymerization: Resin is hardened, often using heat or light.

   • Applications: Ideal for ultrastructural studies requiring thin sections