Table 1.

Overview of described bacterial contaminants of germ-free isolators.

Phylum	Species	Reference
Proteobacteria	Alcaligenes sp	(59)
Firmicutes	Bacillus licheniformis	(70)
Firmicutes	Bacillus subtilis	(59)
Firmicutes	Clostridium perfringens type D	(77, 81)
Firmicutes	Lactobacillus sp.	(59)
Actinobacteria	Micrococcus luteus	(70)
Tenericutes	Mycoplasma pulmonis	(87)
Firmicutes	Paenibacillus dendritiformis	(70)
Firmicutes	Paenibacillus macerans	(70)
Firmicutes	Paenibacillus motobuensis	(70)
Firmicutes	Paenibacillus thermophilus	(70)
Ascomycota	Penicillium sp.	(59)
Firmicutes	Sarcina sp.	(59)
Firmicutes	Staphylococcus aureus	(59)
Firmicutes	Staphylococcus epidermidis	(59)
Firmicutes	Turcibacter sp.	(88)