Gram Stains of Bacteria

Bio 243 Microbiology

Some of the unknowns used in class

Note: differences in media used to grow, growth rate, age of culture, concentration of cells, technique will leadto differences in appearance when Gram staining.

Muse

Escherichia coli

Gram stain

Klebsiella pneumoniae

Gram stains

Enterobacter aerogenes

Gram stain

Staphylococcus aureus

Gram stain

Staphylococcus epidermis

Gram stain

The Grapes of Staph!

Bacillus subtilis

Bacillus cereus

Gram stain

Sporulating: ? stain

Bacillus megaterium

Gram stain

Bacillus megaterium

Spore stain

Micrococcus luteus

Pseudomonas aeruginosa

Gram stain

Proteus vulgaris

1000x Gram stain2000x flagellar

Mycobacterium smegmatis

Acid Fast Staining