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  Difference between mycobacterium tuberculosis &mycobacterium leprae   Characters Mycobacterium tuberculosis Mycobacterium leprae Gram Staining Week Gram Positive Week Gram Positive Shape Rod shape bacilli Rod shape bacilli Endospores Absent Absent Capsule Absent Absent Motility Non-Motile Non-Motile Respiration Aerobic respiration Microaerophilic respiration Optimum Temperature 37 °C 27 °C to 30 °C Optimum pH 5.4 – 6.5 7.0 Incubation Period 2 to 6 Weeks 5 years. Habitat Found in water and soil. Found in air, water and soil. Respiration Aerobic respiration Microaerophilic respiration Symotoms l  Cough ·  Thick, stiff or dry skin   l  Weight loss ·  Painless ulcers on the soles of feet l  Coughing up blood or mucus ·  Painless swelling or lumps on the face or earlobes Acid Fast Staining Red colour Acid fast bacilli   Red colour Acid fast bacilli   Motility Test Non-motile Non-Motile Culture medium Lowenstein Jensen (LJ) Medium- ...

  Coagulase-negative and Coagulase-positive staphylococcus difference                                                                                   Keerthi vasan R.

            N eisseria gonorrhoeae and N eisseria                                              meningitidis   Difference  keerthi Vasan R.

  Major Difference Staphylococcus spp.             and  Streptococcus spp Keerthi vasan R