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Listen to native speakers pronounce “pneumococcus” in real conversational contexts with synchronized timestamps and subtitles.
And this was done by a scientist called Avery.And what he did is he found that he worked on a bacteria, pneumococcus, and the bacteria could make smooth colonies or rough colonies.And if he took, extracted the chemicals that make up the bacterial cells from, say, a smooth colony and then added it to the rough colony,
A form of micrococcus found in the sputum (and elsewhere) of persons suffering with pneumonia, and thought to be the cause of this disease.
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