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Haemolytic reaction of Listeria monocytogenes on bilayer Columbia Agar plates with defibrinated guinea‐pig blood
Author(s) -
Schuch Dulce M.T.,
Moore J.,
Madden R.H.,
Espie W.E.
Publication year - 1992
Publication title -
letters in applied microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.698
H-Index - 110
eISSN - 1472-765X
pISSN - 0266-8254
DOI - 10.1111/j.1472-765x.1992.tb00729.x
Subject(s) - queen (butterfly) , library science , geography , biology , zoology , computer science , hymenoptera
Haemolysis on blood agar is an important test for the differentation of pathogenic from non‐pathogenic Listeria species. The food‐borne pathogen Listeria monocytogenes can only be differentiated from harmless L. innocua by its weak β‐haemolysis on blood agar. This study demonstrates that L. monocytogenes , which is weakly haemolytic on sheep or horse blood agar forms clear zones of haemolysis on guinea‐pig blood agar, which renders haemolysis enhancing methods, such as the CAMP test unnecessary.