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presence of numerous hairs covering virtually the entire exoskeletal surface

using positive indirect immunofluorescence this test reveals the presence of giardia lamblia in serum dilution

photomicrograph of a positive indirect immunofluorescence test checking for the presence of giardia lamblia

using an iodine staining technique this photomicrograph reveals the presence of a giardia lamblia cyst

presence of numerous marburg virus virions in a liver tissue specimen

ebola hemorrhagic fever infection including the presence of numbers of ebola virions

using a silver staining technique revealing the presence of leptospira bacteria

photomicrograph of liver tissue revealing the presence of leptospira bacteria

photomicrograph of kidney tissue using a silver staining technique revealing the presence of leptospira bacteria

stained mouse brain impression smear reveals the presence of the bacterium chlamydophila psittaci

photomicrograph revealed positive presence of chlamydophila psittaci formerly chlamydia psittaci

presence of la crosse lac encephalitis virus ribonucleoprotein particles

presence of a solitary yersinia pestis formerly pasteurella pestis gram negative bacterium

fluorescent antibody stained photomicrograph revealed the presence of enteropathogenic escherichia coli bacteria
