PG Preparation

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Colony Appearance in Culture for Organisms


 
 
 
Colony Appearance in Culture Organism
1. Draughtsman ( Concentric Rings) Pneumococci
2. (a) Medusa Head

(b) Frosted Glass

(C) Inverted Fir Tree in Stab Culture

 B. Anthracis
3. Swimming Growth ( Fishy or Seminal Smell) Proteus
4. Swarm of Gnats Or Fish in Stream V. Cholerae
5. Stalactite growth Yersinia Pestis
6. Thumb print appearance, Bisected pearls or

mercury drops , Aluminium Paint appearance

 B. Pertussis
7. Cigar bundle ( globi ) appearance M.Leprae
8. Fried egg Mycoplasma
9. Bread crumb Actinomyces israelii
10. Oil Paint Staphylococci
11. School of Red fish H. ducreyi
12. Stately Motility Clostrida

 
 
 

Tests for Organisms


 
1. Ascolis thermoprecipitation test Anthrax, Plague. 
   
2. Xeno Diagnosis Rickettasiae

 
3. Naegler’s reaction ( is due to Lecithinase) Clostrida
4. Green fluroscence on media with neutral red Cl. Tetani
5. Cholera Red reaction indole formation and 

Nitrates to Nitrites

 Cholera
6. Strauss reaction Pseudomonas. Mallei
7. Neil Mooser reaction ( Tunica reaction) Rickettsia. Mooseri
8. Satellitism H.Influenza
9. a) Chinese letter pattern

b) Eleks test 

c) Schick test

 Diptheria

Diptheria

Diptheria
10. Dick test Streptococci
11. Schultz- charlton reaction Streptococci
12. M’Fadyean’s reaction B.Anthrax
13. Stormy reaction in Culture Cl. Welchii
14. Milk Ring test ( Rose Bengal Card test) Brucellosis
15. Von- Pirquet test Tuberculosis
16. Kochs’ phenomenon Tuberculosis
17. Francis test (Dick test) Pneumococci
18. String Test V.Cholerae

 
 


 

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