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Table 1 The standard of identifying gross pathological lesion indexes of organs by pathological observation

From: Effects of Mycobacterium vaccae vaccine in a mouse model of tuberculosis: protective action and differentially expressed genes

Organs Lesion indexes
1+ 2+ 3+
Lung Without TB nodules and caseous necrosis The number of TB nodules ≤10 or the area of caseous necrosis up to 20% The number of TB nodules ≥10 or the area of caseous necrosis up to 40% The number of TB nodules ≥20 or the area of caseous necrosis up to 40%
Liver Normal size Slight swell a Moderate swell b Severe swell c
Spleen Normal size Slight swell a Moderate swell b Severe swell c
  1. Note: Relative to normal liver and spleen, a swell was less than 20%; b swell was more than 20% and less than 40%; c swell was more than 40%