It is difficult to grow
bordetella pertussis in a laboratory because of its inability to grow on ordinary
laboratory media such as nutrient agar or macconkey agar. The organism will
only grow on specialized media supplemented with charcoal, blood (20%), potato
(starch) in order to absorb toxic substances which can inhibit its growth in the
agar.
C. The farmers all planted the same potato variety, which was susceptible to a potato blight
Explanation:
peripheral, peripheral nervous system, central nervous system, central nervous system, peripheral
The proportion of sand, silt, and clay in a soil's composition determines its <span>texture. It depends on the proportions of soil particles.
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C, a news article about the Boston marathon. Because it displays the tragedy of that day, and only lists the prominent runners in that race.