What Does A Positive Gelatin Hydrolysis Test Mean?
What Does A Positive Gelatin Hydrolysis Test Mean? Positive: Partial or total liquefaction of the inoculated tube (the control tube must be completely solidified) at 4°C within 14 days. On plates, gelatin hydrolysis is indicated by clear zones around gelatinase-positive colonies. Negative: Complete solidification of the tube at 4°C. Is P vulgaris gelatinase-positive? vulgaris is