Histological techniques can be used to study heterotrophic characteristics in cells and tissues:
1. Staining Methods: Specific staining techniques like Periodic Acid-Schiff (PAS) stain can identify glycogen stores in cells, indicating their metabolic state.
2. Electron Microscopy: This allows for the observation of cellular organelles involved in heterotrophic processes, such as lysosomes and mitochondria.
3. Enzyme Histochemistry: Techniques like enzyme histochemistry can identify active metabolic pathways by staining for specific enzymes involved in nutrient breakdown and energy production.