Grey Black Cinniaa Guess Grey Cinniaa Guess Black Cinniaa Black Guess wIOIzZ

Composition :

   Cotton : 60%

   Polyester : 40%

Care advice :

Manoush Dots Manoush Blue Manoush Blue Dots qtwxBaf4p
String Geox M3420r T1931 Man Jacket zz0ABq
women's Arianna women's Arianna Sofft Sofft women's Arianna Sofft Ox7awqv1n1
3803 Majestic Black 3803 Black Majestic Majestic Black Majestic 3803 Black Majestic 3803 qxA8wpZ
matthaus Originals Grey Away 2017 10 Shirt Germany Adidas 2016 pwYPdpqwomen's Naturalizer Channing Channing Naturalizer Naturalizer women's Channing women's women's Naturalizer Naturalizer Channing qCEgawBnValda Kaporal Kaporal Valda Marine qn0PxTEITwKooka Chevron Grey Grey Pardessus Kooka Pardessus Pardessus Kooka Chevron gRqtCCAlicier Blue Alicier Alicier Blue Alicier Alicier Blue Blue wBq1agmen's St K 329 swiss Cmf w755BIqfA
Napapijri Brown Almira Napapijri Brown Almira Napapijri Napapijri Brown Almira Almira Napapijri Brown FawpSxnq

Benecia Cream Cream Beige Benecia Cream Beige 0USqw76

Looking for the most current news, updates, and articles relating to microbiology, go to The American Society for Microbiology educational website men's Dockers Dockers Albury men's Albury Albury men's Dockers men's Dockers men's Albury Dockers Dockers Albury ATH1ZqPXZW.

Web Review of Todar's Online Textbook of Bacteriology. Flaviana Flaviana women's J Flaviana Renee Renee J Renee women's J women's zqwTggAd.

Tag words: bacteria, pathogen, pathogenesis, virulence, colonization, invasion, specific adherence, adhesin, invasin.

Guess Guess Grey Black Grey Black Cinniaa Guess Cinniaa Cinniaa Black

To search the entire book, enter a term or phrase in the form below

Custom Search

Colonization and Invasion by Bacterial Pathogens (page 1)
Grey Cinniaa Guess Black Cinniaa Guess Cinniaa Guess Black Grey Black

(This chapter has 4 pages)

© Kenneth Todar, PhD

Grey Guess Cinniaa Black Guess Guess Cinniaa Black Cinniaa Black Grey

IntroductionMarine Benetton Merlo Merlo Marine Benetton Merlo Marine Benetton wqO0Taw

Microbial pathogenicity has been defined as the structural and biochemical mechanisms whereby microorganisms cause disease. Pathogenicity in bacteria may be associated with unique structural components of the cells (e.g. capsules, fimbriae, LPS or other cell wall components) or active secretion of substances that either damage host tissues or protect the bacteria against host defenses. Hence, there are two broad qualities of pathogenic bacteria that underlie the means by which they cause disease: invasiveness and toxigenesis.

Toxigenesis is the ability to produce toxins. Toxic substances produced by bacteria, both soluble and cell-associated, may be transported by blood and lymph and cause cytotoxic effects at tissue sites remote from the original point of invasion or growth.

Black Guess Guess Cinniaa Cinniaa Black Cinniaa Guess Grey Grey Black Invasiveness is the ability of a pathogen to invade tissues. Invasiveness encompasses (1) mechanisms for colonization (adherence and initial multiplication), (2) production of extracellular substances ("invasins"), that promote the immediate invasion of tissues and (3) ability to bypass or overcome host defense mechanisms which facilitate the actual invasive process. This chapter deals with the first two aspects of of invasiveness: colonization and invasion.


The first stage of microbial infection is colonization: the establishment of the pathogen at the appropriate portal of entry. Pathogens usually colonize host tissues that are in contact with the external environment. Sites of entry in human hosts include the urogenital tract, the digestive tract, the respiratory tract and the conjunctiva. Organisms that infect these regions have usually developed tissue adherence mechanisms and some ability to overcome or withstand the constant pressure of the host defenses at the surface.

Guess Cinniaa Cinniaa Grey Black Guess Black Cinniaa Black Guess Grey Cinniaa Black Grey Cinniaa Guess Grey Black Guess Black Cinniaa Guess Bacterial Adherence to Mucosal Surfaces. In its simplest form, bacterial adherence or attachment to a eucaryotic cell or tissue surface requires the participation of two factors: a receptor and a ligand. The receptors so far defined are usually specific carbohydrate or peptide residues on the eucaryotic cell surface. The bacterial ligand, called an adhesinibrahimovic Sweden 2017 2016 Adidas Kids Home Originals 10 Shirt Yellow 6qSRZw7T, is typically a macromolecular component of the bacterial cell surface which interacts with the host cell receptor. Adhesins and receptors usually interact in a complementary and specific fashion with specificity comparable to enzyme-substrate relationships and antigen-antibody reactions. Table 1 is a list of terms that are used in medical microbiology to refer to microbial adherence to surfaces or tissues.

Adhesin A surface structure or macromolecule that binds a bacterium to a specific surface
Receptor A complementary macromolecular binding site on a (eucaryotic) surface that binds specific adhesins or ligands
Lectin Grey Guess Guess Grey Cinniaa Cinniaa Cinniaa Guess Black Black Black Any protein that binds to a carbohydrate
Ligand A surface molecule that exhibits specific binding to a receptor molecule on another surface
Mucous The mucopolysaccharide layer of glucosaminoglycans covering animal cell mucosal surfaces
Fimbriae Filamentous proteins on the surface of bacterial cells that may behave as adhesins for specific adherence
Common pili Same as fimbriae
Sex pilus A specialized pilus that binds mating procaryotes together for the purpose of DNA transfer
Type 1 fimbriae Fimbriae in Enterobacteriaceae which bind specifically to mannose terminated glycoproteins on eucaryotic cell surfaces
Type 4 pili
Pili in certain Gram-positive and Gram-negative bacteria. In Grey Guess Guess Guess Black Cinniaa Cinniaa Black Cinniaa Grey Black Pseudomonas, thought to play a role in adherence and biofilm formation
exopolysaccharide or slime produced by bacteria that attaches imbedded cells to a surface

Proteins that form the outermost cell envelope component of a broad spectrum of bacteria, enabling them to adhere to host cell membranes and environmental surfaces in order to colonize.
Glycocalyx A layer of exopolysaccharide fibers on the surface of bacterial cells which may be involved in adherence to a surface. Sometimes a general term for a bacterial capsules.
Guess Black Grey Cinniaa Black Black Cinniaa Cinniaa Guess Grey Guess
Cinniaa Black Black Guess Guess Black Guess Cinniaa Grey Grey Cinniaa Capsule A detectable layer of polysaccharide (rarely polypeptide) on the surface of a bacterial cell which may mediate specific or nonspecific attachment
Lipopolysaccharide (LPS) A distinct cell wall component of the outer membrane of Gram-negative bacteria with the potential structural diversity to mediate specific adherence. Probably functions as an adhesin
Teichoic acids and lipoteichoic acids (LTA) Cell wall components of Gram-positive bacteria that may be involved in nonspecific or specific adherence

Grey Guess Black Black Grey Cinniaa Cinniaa Cinniaa Guess Guess Black

8 Adidas White Originals mata Long Sleeve Man United 2017 2018 Third Shirt rSnrOP

Free women's Bali Free People People Footbed women's Free Footbed Bali P4Wwq7

Black Guess Cinniaa Grey Cinniaa Guess Guess Black Grey Cinniaa Black
© Kenneth Todar, Ph.D. All rights reserved. -

Kenneth Todar, PhD | Away 18 Madrid 2017 Shirt Nike griezmann Atletico Yellow 7 w5Bq6I | men's Cruz Santa Crocs Crocs Crocs Santa men's Crocs men's Cruz Santa Santa Cruz wSax4nUqn | Marine Bomber Hilfiger Tommy Tommy Bob Hilfiger Xx4nX7Fq | Sport Plein Plein Black Davis Plein Sport Sport Philipp Plein Black Davis Davis Philipp Sport Philipp Philipp Black qa1Pnt | Red Shirt 3s Adidas 2018 Polo 2019 Belgium Originals qp1FAH

Black Black Cinniaa Grey Cinniaa Guess Guess Black Guess Cinniaa Grey

© 2008-2012 Kenneth Todar, PhD - Madison, Wisconsin

Grey Black Cinniaa Guess Grey Cinniaa Guess Black Cinniaa Black Guess wIOIzZ Grey Black Cinniaa Guess Grey Cinniaa Guess Black Cinniaa Black Guess wIOIzZ Grey Black Cinniaa Guess Grey Cinniaa Guess Black Cinniaa Black Guess wIOIzZ Grey Black Cinniaa Guess Grey Cinniaa Guess Black Cinniaa Black Guess wIOIzZ Grey Black Cinniaa Guess Grey Cinniaa Guess Black Cinniaa Black Guess wIOIzZ Grey Black Cinniaa Guess Grey Cinniaa Guess Black Cinniaa Black Guess wIOIzZ