Morbus Sjögren
nach Chisholm und Mason (J Clin Pathol 1968; 21: 656-660)
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Grading standard for labial salivary gland biopsy
| Grade | Lymphocytes per 4 square mm of salivary tissue |
| 0 | Absent |
| 1 | Slight infiltrate |
| 2 | Moderate infiltrate or less than one focus |
| 3 | One focus |
| 4 | More than one focus |
Focus = an aggregate of 50 or more lymphocytes and histiocytes