TABLE 2.
Flow-cytometric analyses of cultures subjected to different storage conditionsa
| Bacterium | % of cells correctly interpretedb after incubation for:
|
|
|---|---|---|
| 14 days at 5°C | 24 h at −18°C | |
| Gram-positive strains | ||
| B. cereus | 80 (15) | 83 (6) |
| L. lactis | 89 (2) | 100 (2) |
| M. luteus | 100 (1) | 99 (2) |
| S. aureus | 85 (6) | 100 (0) |
| S. agalactiae | 100 (0) | 100 (1) |
| S. dysgalactiae | 100 (1) | 100 (1) |
| S. uberis | 100 (1) | 100 (1) |
| Gram-negative strains | ||
| E. cloacae | 76 (7) | 98 (1) |
| E. coli | 97 (3) | 100 (1) |
| K. oxyloca | 77 (8) | 100 (1) |
| P. fluorescens | 58 (4) | 82 (6) |
| P. putida | 68 (8) | 98 (0) |
| Avg | 86 | 96 |
a
The results were obtained by using the procedure described in “Gram-staining technique for bacterial cultures.”
b
Average of two determinations. Standard deviations are given in parentheses.