The Brucella pathogens are polarized bacteria.

Authors :: Van der Henst C
de Barsy M
Zorreguieta A
Letesson JJ
De Bolle X
Source :: Microbes and infection [Microbes Infect] 2013 Dec; Vol. 15 (14-15), pp. 998-1004. Date of Electronic Publication: 2013 Oct 18.
Publication Year :: 2013
Abstract: Brucella pathogens are responsible for brucellosis, a worldwide zoonosis. They are facultative intracellular pathogens characterized by their asymmetric division and their unipolar growth. This growth modality generates poles with specialized functions (through polar recruitment of polar adhesins or of cell cycle regulators) and progeny cells with potentially different fates.<br /> (Copyright © 2013 Institut Pasteur. Published by Elsevier Masson SAS. All rights reserved.)