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Gram stain - Coggle Diagram
Gram stain
bacillus
gram negative
urease test
negative
EMB test
pink appearance:
Enterobacter aerogenes
green appearance:
Escherchia coli
colorless or red appearance:
Serratia marcescens
positive
glucose/sucrose fermentation
positive:
Proteus vulgaris
negative:
Pseudomonas aeruginosa
gram positive
spore test
negative
positive
BHI test
aerobic:
Bacillus cereus
anaerobic:
Clostridium sporogenes
cocci
gram positive
catalase test
positive
urease test
negative:
Micrococcus luteus
positive
MSA test
positive (yellow fermentation):
Staphylococcus aureus
no color fermentation:
Staphylococcus epidermis
negative
blood agar test
beta hemolysis:
Streptococcus pyogenes
gamma hemolysis:
Enterococcus faecalis
alpha hemolysis:
Streptococcus pneumoniae OR Streptococcus mutans
No stain --> acid fast stain:
Mycobacterium smegmatis