6d • Stains of the Week
🧫 Stains Revisit Week 🔁 | Answer Reveal
💡 Correct answer:👉 Nocardia
🧠 Why?
Nocardia is partially acid-fast, meaning:
• It retains stain with modified acid-fast methods• Uses a weaker decolorizer than traditional acid-fast staining
🔬 Quick Compare:
• Acid-Fast (Ziehl-Neelsen) → Mycobacterium (fully acid-fast)• Modified Acid-Fast → Nocardia (partially acid-fast)
💙 Pattern to remember:
👉 Full acid-fast = Mycobacterium👉 Partial acid-fast = Nocardia
💡 If you see “modified acid-fast” on an exam…your brain should go straight to Nocardia
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🧫 Stains Revisit Week 🔁 | Answer Reveal
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