Practice Staining Techniques to Identify Bacterial Shapes and Spores
- Employ multiple staining techniques
- Materials for 30 lab groups
- Time Required: ~75 minutes
Cocci, bacilli, and spirilliform types of bacteria are easy to see with the simple staining techniques employed in this investigation. Crystal violet and methylene blue stains reveal cellular morphology; in addition, carbol fuchsin stains spores, helping to illustrate how their formation protects bacteria when the organism is under stress. Tube cultures: Aquaspirillum serpens (spirillum), Bacillus cereus (bacillus), and Staphylococcus epidermidis (cocci). The set includes enough materials for 30 students, teacher’s guide, and instructions.
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