Historical clue formulations

• Oxygen-dependent micro-organism — 2026-05-01
• Life form that requires oxygen — 2025-06-15
• Bacterium requiring oxygen — 2024-05-15
• Oxygen-reliant organism — 2018-03-04
• Oxygen-dependent organism — 2016-07-20
• Oxygen-dependent bacterium — 2016-02-28
• Oxygen-needing bacterium — 2014-10-13
• Oxygen user — 2014-04-05
• Mycobacterium, e.g. — 2014-03-13
• Oxygen-dependent organism — 2012-08-31
• Oxygen-needing organism — 2009-04-19
• Bacterium that needs oxygen — 2008-06-01
• Mycobacterium, e.g. — 2005-04-29
• Bacteriologist's study — 2003-04-11
• Oxygen-dependent bacterium — 1996-12-26
• Oxygen-dependent organism — 1995-11-19