Microbiology A microbiologist working on influenza virus in a lab, observes reversal of hemagglutination. This phenomenon is called as? A Hemolysis B Elution C Complement fixation D Precipitation 💡 Explanation A microbiologist working on influenza virus in a lab, observes reversal of hemagglutination. This phenomenon is called as? ✓ Correct Answer: B. Elution