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To answer:
Twenty years ago, Pneumocystis jirovecii, a pathogen of immunocompromised patients that causes pneumonia, was classified as a protozoan because; it is a chemoheterotrophic that lacks a cell wall. However, taxonomists today classify Pneumocystis as a
Introduction:
Pneumocystis jirovecii is previously known as P. carinii, is a yeast-like fungus. It causes pneumocystis pneumonia. It mainly affects immunocompromised patients, like patients with HIV. When it was called as P. carinii, it was known to cause disease in rats and human.
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