Bacteries gram pdf
Gramnegative bacteria. l Waxy cell wall with mycolic acids (instead of peptidoglycan). l Acidfast, drug resistant, resistant to drying, and pathogenic due to waxy cell wall. l Grow very slowly. l Tend to cause chronic infections. Ch11Bacteria. PDF Author: lsstaff Created Date:For example, Streptococcus pneumoniae, which causes pneumonia, is a Grampositive bacterium, while Escherichia coli (E. coli) and Vibrio cholerae, which causes cholera, are Gramnegative bacteria. bacteries gram pdf
Les bactries Gram ngatif IGnralits: La morphologie bactrienne constitue toujours une tape essentielle quelle soit recherche en directement sur produit pathologique ou sur culture
Media in category Bacteria diagrams The following 200 files are in this category, out of 209 total. (previous page) () Effect of the removal of outer cell wall layers on the actinomycin susceptibility of a gramnegative bacterium. Antimicrob Agents Chemother. 1972 May; 1 (5): . [PMC free article MacAlister TJ, Costerton JW, Thompson L, Thompson J, Ingram JM. Distribution of alkaline phosphatase within the periplasmic space of gramnegative bacteria. bacteries gram pdf Gramnegative infections include those caused by Klebsiella, Acinetobacter, Pseudomonas aeruginosa, and E. coli. , as well as many other less common bacteria. Outbreak investigations In the past 3 years, the Division of Healthcare Quality Promotion has assisted in at least 10 investigations of outbreaks of gram negative infections.
Bacterial Classification, Structure and Function Introduction The purpose of this lecture is to introduce you to terminology used in microbiology. The lecture will: 1. Cover different classification schemes for grouping bacteria, especially the use of the Gram stain 2. Describe the different types of bacteria 3. bacteries gram pdf Because the structure of the cell surface is the major characteristic that distinguishes grampositive from gramnegative bacteria, the processes used to transport and attach these proteins show significant differences between these bacterial classes. Both grampositive and gramnegative bacteria commonly have a surface layer called an Slayer. In grampositive bacteria, the Slayer is attached to the peptidoglycan layer. Gramnegative bacteria's Slayer is attached directly to the outer membrane. Specific to grampositive bacteria is the presence of teichoic acids in the cell wall. Some of these are lipoteichoic acids, which have a lipid component in Holmberg K, Hallander HO. Interference between grampositive microorganisms in dental plaque. J Dent Res. 1972 MarApr; 51 (2): . Holmberg K, Hallander HO. Production of bactericidal concentrations of hydrogen peroxide by Streptococcus sanguis. Arch Certaines bactries GRAM sont capables, lorsque les conditions extrieures sont trs dfavorables de prendre une forme dite sporule.Rating: 4.74 / Views: 508