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4/20/13 Morax-Axenfeld diplobacilli - Wikipedia, the free encyclopedia Morax-Axenfeld diplobacilli From Wikipedia, the free encyclopedia (Redirected from Moraxella lacunata) Morax-Axenfeld diplobacillus or Moraxella lacunata is a rod-shaped,[1] Gram negative, non motile bacteria, generally present as diploid pairs.[2] They cause one of the commonest forms of catarrhal conjunctivitis.[3] Moraxella lacunata Scientific classification Contents 1 History 2 Characters 3 Clinical significance 4 References History M. lacunata was first described independently by Victor Morax (1896) and Theodor Axenfeld (1897), hence the name "Morax-Axenfeld diplobacilli" and the name of eye affection in humans is sometimes called "Morax-Axenfeld conjunctivitis".[2] Kingdom: Bacteria Phylum: Proteobacteria Class: Gammaproteobacteria Order: Pseudomonadales Family: Moraxellaceae Genus: Moraxella Species: M. lacunata Binomial name Moraxella lacunata Characters It has the ability to change its morphology in laboratory. M.lacunata became shorter and tended to lose their Gram-negative staining characteristic when left out for 5 days. They also tended to retain these new characteristics on subsequent blood-agar transfers.[4] Clinical significance Infection occurs mainly in adults, but can occur at any age. It is characterized by: 1. 2. 3. 4. 5. Chronic, mild angular blepharo-conjunctivitis frequently localized on the lid at the outer canthus. Typical erythema of the edges of the lids Slight maceration of the skin, most marked at the angles, especially the outer canthus. Superficial infiltration of the cornea is not uncommon.[3] The discharge is grayish yellow, adherent to the lashes and accumulates mainly at the angles.[5] References 1. ^ Morax-axenfeld bacillus - Medical Definition and More from Merriam-Webster (http://www.merriam-webster.com/medical/morax-axenfeld%20bacillus) 2. ^ a b Bergey's Manual® of Systematic Bacteriology: Volume 2: The Proteobacteria ... - ﻛﺘﺐGoogle (http://books.google.com.eg/books? id=5zSYmcq0GdgC&pg=PA412&lpg=PA412&dq=morax+axenfeld+bacillus+gram+negative&source=bl&ots=fihYPxoWMh&sig=_BLAKOIQxFx0ASYZqXGUShf8KjQ&hl=ar&sa=X&ei=f AWNUI3rGZDptQaN2YH4Aw&ved=0CDoQ6AEwBA#v=onepage&q&f=false) 3. ^ a b Read the ebook The pathology of the eye (Volume 1) by John Herbert Parsons (http://www.ebooksread.com/authors-eng/john-herbert-parsons/the-pathology-of-the-eye-volume-1ala/page-6-the-pathology-of-the-eye-volume-1-ala.shtml) 4. ^ JAMA Network | Archives of Ophthalmology | Variations in Morax-Axenfeld Diplobacillus (http://archopht.jamanetwork.com/article.aspx?articleid=624676) 5. ^ http://www.termiumplus.gc.ca/tpv2alpha/alpha-eng.html? lang=eng&i=1&index=alr&srchtxt=tumefaccion&where=%28vpen_advanced,vpfr_advanced,vpes_advanced,vppt_advanced+inc+%27tumefaccion%27+%29&dom=NED&comencdomnsubj= Retrieved from "http://en.wikipedia.org/w/index.php?title=Morax-Axenfeld_diplobacilli&oldid=531909701" Categories: Gram-negative bacteria Moraxellaceae This page was last modified on 8 January 2013 at 05:54. Text is available under the Creative Commons Attribution-ShareAlike License; additional terms may apply. By using this site, you agree to the Terms of Use and Privacy Policy. Wikipedia® is a registered trademark of the Wikimedia Foundation, Inc., a non-profit organization. en.wikipedia.org/wiki/Moraxella_lacunata 1/1