Table I.
List of the models considered.
| Effect on growth |
M++ | M+− | M+0 | M−+ | M−− | M−0 | M0+ | M0− | M00 |
|---|---|---|---|---|---|---|---|---|---|
| NTHI on Sp | + | + | + | − | − | − | 0 | 0 | 0 |
| Sp on NTHI | + | − | 0 | + | − | 0 | + | − | 0 |
+ = counteracts, − = helps, 0 = stays neutral
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