Supplemental visual material
Cysts of Pneumocystis "carinii"
Pneumocystis "carinii" is actually a name that represents a complex
of morphologically similar, but genetically distinct, species found
in a wide range of hosts. The
species infecting the lungs of humans has been termed P. jiroveci
Frenkel, 1999 whereas those from most other hosts (and in most cases
humans too) are
collectively termed "Pneumocystis carinii." The original host
from which the organism was first described was a guinea pig. The species
above is from the lung of a rat.
Originals; all photographs by S.J. Upton
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Kansas State University | Biology Division