| a) Pneumococci b) Cryptococci | India ink India ink |
| C. Diptheriae | Methylene Blue, Ponder’s , Albert’s, Neisser’s Stains |
| Treponemes | a) Giemsa Stain b) Levaditi Stain |
| Anthrax | Sudan black |
| Gr. Inguinale | Wright’s Stain |
| Pneumocystisis carinii | Methanamine silver nitrate |
| Trichomonas | Brilliant Cresylviolet 1% |
| Nocardia | Acid fast stains |
| T.B | Auramine and Rhodamine also |
| Nocardia, TB, Leprosy | Acid fast stains. |
Arrangement of Bacteria
| Streptococci | Chains |
| Anthrax | Chains ( Bamboo stick appearance) |
| Staphylococci | Bunches |
| Pneumococci | Pairs |
| Enterococci | Pairs |
| Meningococci | Pairs mainly intracellular |
| Gonococci | Pairs mainly intracellular |
| Diptheriae | Cuneiform or Chinese letter pattern |
| Enterococci | Pairs at angle ( Oval Cells) or short chains |
| Cl. Welchii | Single or chain or bundles |
| Morax- Axenfield Bacilus | Diplobacillus |
| Leprosy Bacilli | In globi, cigar bundle appearance |
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