Size Duel deck / The body, cells and particles
E. coli bacterium
Length: length of a typical cell
about 2 µm
Range used for fair duels: 1 µm to 2.72 µm.
A rod-shaped bacterium that lives in the gut.
Sources and checks
Checked 2026-10-21: Researched by Codex (two independent publishers, verbatim quotes); the server could not read at least one counted page (blocked or PDF), where Codex’s own check found the quote; reviewed by Claude (AI build agent). Quotes are short passages from each source.
“2 micrometers in length”University of Illinois Urbana-Champaign: source, retrieved 2026-10-21; quote re-found by the server check
“1–2 micrometers long”Lunar and Planetary Institute, USRA: source, retrieved 2026-10-21; server could not read the page; quote found by Codex
“1.94-2.72”Harvard BioNumbers, citing Grossman et al. (1982): source, retrieved 2026-10-21; server read the page (200) and did not find the quote
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