Fig. 5
From: Development of a point-of-care-device for fast detection of periodontal pathogens
Lyophilization test. Comparison of the polymerase activity after 1 (a) and 4 (b) months of storage of freeze-dried PCR mixes.1-3) storage at 4 °C, 4) storage at 4 °C without addition of trehalose, 5-7) storage at room temperature, 8) storage at room temperature without addition of trehalose, 9) PCR negative control, 10) negative control stored at 4 °C, 11) positive control after lyophilization