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Table 1 Scoring of muscle damage based on pathology in muscle fibers

From: Lack of robust satellite cell activation and muscle regeneration during the progression of Pompe disease

Score

Cross striation

PAS-positive staining

Vacuoles

 0

Normal

None

None

 1

>75 % normal

Little in most and/or all

Little in all and/or significant in some

 2

25–75 % normal

Significant in all and strong in some; significant and/or strong in most

Significant in all and/or many in some

 3

<25 % normal

Very strong in all

Many in all