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🟣🔵Correct Answer -
👉✅Bordetella pertussis
• In culture smears, the bacilli are arranged in loose clumps with clear spaces in between giving a thumbprint appearance.
Culture Characteristics of Bordetella
• Incorporation of diamine fluoride and penicillin (Lacey's DFP medium) makes it more selective.
• It produces bisected pearl or mercury drops colonies
• Confluent growth is present with "aluminium paint" appearance
• In culture smears the bacilli are arranged in loose clumps with clear spaces in between giving a thumbprint appearance.
• Transport media used are modified by Stuart's medium and Mischulo's charcoal agar.

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