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NYC Biome MAP

Microorganisms reside everywhere, yet they are too small to be seen with the human eye. New York City (NYC) is a melting pot of cultures - both human and microbial - and every citizen has a personalized microbiome. Collectively, we shape NYC’s microbiome by our lifestyle choices, and this unseen... Read More

Spirogyra filament

Microscopic view of the green algae Spirogyra filament and a number of primitive worms known as rotifers. (approx. 100X). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

E.coli on MacConkey Agar (Mac)

Streak plate isolation of E. coli on MacConkey Agar grown for 24 hrs at 37 degrees. E. coli demonstrates strong lactose fermentation indicated by the bright pink halo, bile precipitant around the colonies, and pink colony growth. Read More

Safranin stained rods

Safranin stained rods. (approx. 1000 X). taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Streptococcus pneumoniae

Streptococcus pneumoniae in sputum smear. Gram stain (1200X) Read More

E. coli gram stain

Gram stain of E. coli showing characteristic G- rods. Read More

two human cheek cells with surfaces covered by various shaped bacteria

Simple stain - two human cheek cells with surfaces covered by various shaped bacteria . (approx. X 100). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

How Escherichia coli Move

Escherichia coli use long, whip-like structures called flagella to propel themselves. Motors in the cell's wall spin the flagella into bundles that rotate counter-clockwise, creating a twist that causes the bacterium to rotate clockwise, or towards the right when viewed from above.

Insight in... Read More

Micrococcus lutea

Gram-stain of Micrococcus lutea. (approx. 1000 X). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Harvest Season

Saccharomyces cerevisiae is a species of yeast. It is the active agent responsible for our most basic foods - bread, wine, and beer since ancient civilizations. It has been long since humans have tried to understand how to make them more productive. However, it was not until the Genomic Era that... Read More

fluorescent antibody staining of wall deficient mycobacterium tuberculosis var. hominis

fluorescent antibody staining of wall deficient mycobacterium tuberculosis var. hominis Read More

Actinomyces odontolyticus

Actinomyces odontolyticus. Smooth red colony Read More

Cell to Cell

Bacteria were 'painted' on agar and sealed in epoxy. Work by Maria Penil in the Berkmen lab Read More

CAMP test of Group-B streptococci

If the laboratory is not able to identify group-B streptococci (GBS) by the Lancefield grouping procedure, there are other microbiologic tests that can be used to identify GBS. This picture shows one of these tests. It is called the CAMP test. CAMP is an acronym for the authors of this test (Chr... Read More

Proteus vulgaris

Circular, smooth, entire, opaque colonies of Proteus vulgaris on a nutrient agar plate. Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

Plasmodium ovale

Plasmodium ovale amoeboid troph showing fimbriated RBC. (1000X) Read More

Salmonella typhi.

Flagella stain of Salmonella typhi. (approx. 1000 X). Taken from the Wistreich Collection, appearing exclusively on MicrobeWorld. Read More

SIM Media

Sulfur-indole-motility test (SIM media) results for:
(A) Escherichia coli: Motile***, hydrogen sulfide (-), indole (+)*
(B) Staphylococcus aureus: Non-motile, hydrogen sulfide (-), indole (-)
(C) Salmonella arizonae: Motile, hydrogen sulfide (+)**, indole (-)
(D) Enterobacter aerogenes: Mot... Read More

Brown and Brenn stained lung sections of patient from whom Legionella pneumophilia was isolated, showing intra-alveolar exudation of macrophages and polymorphonuclear leukocytes. Legionella pneumophilia is not stained (500X)

Brown and Brenn stained lung sections of patient from whom Legionella pneumophilia was isolated, showing intra-alveolar exudation of macrophages and polymorphonuclear leukocytes. Legionella pneumophilia is not stained (500X) Read More

Mycoplasma pneumoniae

Mycoplasma pneumoniae. Photomicrograph, unstained. Note two isolated colonies adjacent to a single classical artifact, a 'pseudocolony' (750X) Read More
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