Microbiology Archives « Page 2 of 8

Pleomorphism

Pleomorphism refers to the existance of 2 or more structural forms in the life cycle of an organism. In bacteriology, it refers to the variation in the structural

Microbiology

Fried egg appearance

Fried egg appearance is found in mycoplasma colonies. Mycoplasma colonies: biphasic – distinct central and peripheral zones central zone – opaque, granular – growth extending into the depth

Microbiology

Smallest free living microorganism

Mycoplasma

Microbiology

McFadyean's reaction

When a blood film containing anthrax bacilli is stained using polychrome methylene blue for a few seconds and observed under microscope, a purplish coat of amorphous material is

Medicine

Rickettsial diseases

Rickettsial disease are of 2 types – typhus group and spotted fever group. Typhus group: Epidemic typhus / Classic typhus / louse borne typhus / gaol fever –

Microbiology

Diseases caused by Haemophilus influenzae

Haemophilus influenzae produces both invasive and non invasive infections Invasive diseases are usually caused by capsulated strains. The bacilli are protected from phagocytes by the capsule and spread

Microbiology

Bacteremia

Presence of bacteria in the blood

Microbiology

Influenza virus was isolated by

Smith, Andrewes and Laidlaw in 1933.

Microbiology

Wayson stain

Wayson stain of Yersinia pestis showing characteristic safety pin appearance Wayson stain is a modified methylene blue stain used to demonstrate Yersinia pestis for diagnosis of bubonic plague.

Category: Microbiology