Table 5: The impact of the various treatments on hydroxyproline levels in the lungs of silica-exposed rats.

TreatmentNumber of animalsHydroxyproline level (mg/g*)
Day 30Day 50

Chinese herbal Kombucha 6
Kombucha 6
Tetrandrine 6
Positive control 6

Negative control 6

Value differs significantly from that for the negative control group ( ).
*Milligrams of hydroxyproline per gram of lung tissue.