Introduction
Use the key choices to identify the major tissue types in histology by observing distinctive morphological features, staining patterns, and cellular arrangements. This guide walks you through the essential criteria, step‑by‑step methods, and scientific rationale needed to confidently classify tissue samples in any laboratory setting.
Steps to Identify Major Tissue
1. Collect a representative sample
- Fixation: Preserve tissue promptly with formalin to maintain structural integrity.
- Embedding: Encase the sample in paraffin or resin to enable thin slicing.
- Sectioning: Cut sections 4–10 µm thick using a microtome for optimal microscopic view.
2. Prepare the slide
- Mounting: Place sections on a clean glass slide using a mounting medium.
- Staining: Apply common stains such as Hematoxylin and Eosin (H&E) or Special stains (e.g., Masson’s Trichrome) to highlight specific components.
3. Examine cellular architecture
- Cell shape: Look for epithelial (flattened, cuboidal, columnar), connective (spindle‑shaped fibroblasts), muscle (elongated, striated or smooth), or nervous (star‑shaped neurons).
- Cellular arrangement: Note whether cells are
