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Table 5 Severity of histopathological damage observed in lungs during the experiment

From: Animal model of Mycoplasma fermentans respiratory infection

Day M. fermentans P 140 M. fermentans PG 18 M. pneumoniae
1 - - -
5 + - ++
10 +++ + +++
15 ++ + +++
25 ++ + ++
35 ++ ++ ++
50 ++ ++ ++
  1. Score:
  2. - No damage in 100% of 10 fields observed.
  3. + Interstitial tissue infiltrated with inflammatory cells in less than 30% of 10 fields observed.
  4. ++ Interstitial tissue infiltrated with inflammatory cells in 30–60% of 10 fields observed.
  5. +++ Interstitial tissue infiltrated with inflammatory cells in more than 60% of 10 fields observed.