Table 1. Time required to reach at least 250 colonies in microaerobic and oxygen enriched conditions for three strains of C. jejuni grown on Columbia blood agar plates (CBA) and Columbia blood-free agar (CA) plates from a 100 µL spread inoculum of a 10⁵ diluted culture.

		C. jejuni NCTC 11168	C. jejuni 81–176
CBA	5% O2, 10% CO2, 85% N2	15 h	15 h
	19% O2, 10% CO2, 71% N2	15 h	15 h
CA	5% O2, 10% CO2, 85% N2	24 h	24 h
	19% O2, 10% CO2, 71% N2	>63 h	42 h