PPT-NON–SPORE FORMING GRAM-POSITIVE

RODS Corynebacterium diphtheriae And Listeria monocytogenes AsstProfDr NADIA HAMEED 20222023 Gram positive Bacilli Aerobic Anaerobici. Clostridium , a Gram-positive spore bearing anaerobic bacteria is the major aetiological agent of diarrhoea and colitis associated with antibiotics. Hall and O’Toole 1 originally identi� There are 3 . aerobic. of gram positive bacilli include:. Bacillus. . Corynebacterium diphtheria.. Listeria monocytogenes.. There are 2 pathogenic . bacillus species . of . gram positive, aerobic, spore-forming rods. Dr. Nariman Sindi. 1. classification. The classification of streptococci is based on:. Hemolysis:. Alpha-. hemolytic. streptococci (. α. -. hemolytic. ):. Incomplete lysis (partial hemolysis) of red blood cells (RBCs) in the agar resulting in the formation of a greenish zone around their colonies.. Spore stain. Capsule stain. Endospores. . are formed by some bacteria, aerobic . Bacillus. species and anaerobic . Clostridium. species.. Non active, resistant to heating and chemicals.. Remain dormant until favorable conditions return.. Physical differences & clinical . signifigance. . . Figure 4.8b. Gram- positive bacteria. Gram-negative bacteria. Figure 4.8a. Gram-Positive cell walls. Teichoic acids:. Lipoteichoic acid links to plasma membrane. Gram-Positive Bacilli Bacteria Dr. Alan N. Talabani Lecturer at College of Medicine/University of Sulaimani Gram-Positive Bacteria I- Gram Positive bacteria A- Gram positive cocci B- Gram positive rods . . Clostridia and Bacillus . By: . lec. . . Dr.Thanaa. . Rasheed. 7. th. . Lec. . Bacteriology . Gram-Positive Rods. There are four medically important genera of gram-positive rods: . Clostridium, Bacillus, . SPP.. . Bacillus. . . . Prepared . by . Assit.Prof.Dr. . . Najdat. . B.Mahdi. Introduction. The gram-positive spore-forming bacilli are the . Bacillus. and . Clostridium. species. These bacilli are ubiquitous, and because they form spores they can survive in the environment for many years. . powerfull. exotoxins . some species are . saccharolytic. , producing acid and gas from carbohydrates and many are . proteolytic. , the clostridia are widely distributed in nature and are present in soil and in the intestinal tract of man and animals . . . . . . Dr.oruba. Khalid abbas. ACTINOMYCETES. In this lecture , we shall discuss 3 genera of actinomycetes: . Actinomyces, Nocardia. , and . Streptomyces.. . These organisms have been shown to be . 1078 1079 separated into two tubes; one tube contained anticoagulant for hematology studies, and in other tube without anticoagulant was used for serum separation and subsequent biochemical tests. Blo True or False. False - the presence of microbes in a clinical specimen does not always indicate the presence of infection.  Prokaryotic cell structure is microscopically characterized by:. A. Small . Clostridium Species. By : Nader . Alaridah. MD , PhD . Bacillus Species. The genus Bacillus includes large aerobic or . facultatively. anaerobic, gram-positive , spore forming rods occurring in chains.. Gram Positive. Gram Negative. Gram-Positive bacteria. Gram-Negative bacteria. Cell Wall. A single-layered, smooth cell wall.  A double-layered, wavy cell-wall. Cell Wall thickness. The thickness of the cell wall is 20 to 80 .