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Typical drumstick appearance of bacilli is generally seen in

  • A.C perfringens
  • B.C botulinum
  • C.C tetani
  • D.C histolyticum

Answer: C

Correct answer: C tetani

Among the four listed, only C. tetani carries a terminal spherical spore that swells the rod into the classic drumstick. C. perfringens is famous for rarely showing spores at all in clinical material, C. botulinum has subterminal oval spores, and C. histolyticum likewise. The appearance is suggestive rather than diagnostic, since C. tetanomorphum and C. sphenoides share it, but among these four it points unambiguously to C. tetani.

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