Bacterial Colonies of Normal Flors From Arm Plate

Top left: E. coli bacterial colonies grown on TSY agar. Top right: 
E. coli growing in a slant tube of TSY. Left: Close up of E. coli colonies on a streak plate of TSY agar.
1. Smiley face drawn in E. coli  on MacConkey's agar, 2. Control pinwheel showing lactose-negative, colorless Salmonella (top) and lactose-positive, pink E. coli (bottom); 3. Colonies of Gram-negative bacteria growing on MAC, 4. Three plates of MacConkeys, each with different Gram- bacteria: E. coli top lift, Enterobacter, top right and Salmonella on bottom;  5. Sample from kitchen sink plated on TSY (front) and MAC (back).
1. Mycobacterium smegmatis colonies growing on TSY agar; 2. Streak plate of Mycobacterium smegmatis colonies growing on TSY agar, top view; 3. Streak plate of Mycobacterium smegmatis colonies growing on TSY agar, bottom view; 4 & 5. M. smeg written in the bacteria Mycobacteria smegmatis growing on TSY agar. Note, in close-up photo, the waxy appearance of the bacterial colonies.
Top left: Mannitol Salts Agar (MSA) growing Staphylococcus epidermidis. Top right: MSA growing mannitol fermenting pathogenic halophile S. aureus on left and S. epi on right  Left: Punctiform (tiny) bacterial colony morphology of S. epidermidis growing on Mannitol Salt agar.
Bacterial Colony Photos - P2
Page last updated: 8/2015

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MSA growing mannitol fermenting pathogenic halophile S. aureus on left and S. epi on right
Mannitol Salts Agar (MSA) growing Staphylococcus epidermidis.
Punctiform (tiny) bacterial colony morphology of S. epidermidis growing on Mannitol Salt agar.​
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E. coli bacterial colonies grown on TSY agar.
Close up of E. coli colonies on a streak plate of TSY agar.
E. coli growing in a slant tube of TSY.
More Colonies of Gram Positive Bacteria
Staphylococcus Colonies on Mannitol Salt Agar (MSA) 
Colonies of Acid Fast (Waxy) Bacteria
Mycobacterium smegmatis Bacterial Colonies 
(Click on photo to enlarge.)
Colonies of Gram Negative Bacteria
Escherichia coli Bacterial Colonies on TSY  
(See more.)

Gram Negative Colonies on MacConkey's Agar 
(See more)
Arm plate of TSY agar showing normal flora bacterial growth from skin of the forearm.
Hoe to Kill Kitchen Bacteria & Sanitize Surfaces
VIDEO: ​How to Interpret MacConkey's Agar (MAC)
 Bacterial Growth Medium
VIDEO: ​How to Interpret Mannitol Salt Agar (MSA) Specialized Bacterial Growth Medium
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Prokaryotic Cell, Mariana Ruiz
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This page features bacterial colony morphology of Gram-positive, Mycobacteria and Gram-negative bacterial species. 
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