'Gas' in the tissue should be differenciates with:

(Clostridium novyi) (124-Baily & Love 24th) (CSDT 12th) (109) (422-Baily & Love 25th)GAS - GANGRENE - caused by Clostridium perfringens* Gas and smell (mousy odour) are characteristic and crepitus.* Immunocompromised patients are most at risk.* Antibiotic prophylaxis is essential when performing amputation to remove dead tissues.'Gas' in the tissue is not a good differentiating point since some clostridial species do not produce gas (clostri novyi) since non clostridial organisms often produce gas (E. coli) and since air can enter tissues through a penetrating wound.