<i>B. pertussis</i> growth and production of ammonia in media with different glutamate:fumarate ratios.

<p>A) The growth of <i>B. pertussis</i> was monitored by measuring the increase in OD600 of cultures over time. The average OD of 10 replicate cultures is shown. B) Ammonia production was measured in the supernatants of 5 cultures for each medium at the end of growth. The average for each medium type is shown.</p>