Each of the nine patient specimens listed below has produced apositive culture when inoculated and grown on appropriate media.Indicate whether this result is indicative of infection and explain whyor why not.Urine from urethra Liver biopsy BloodLung biopsy Throat Urine from bladderSaliva Cerebrospinal fluid Semen
Microscopic examination
The analysis of minute organisms, cellular organization of any biological structure, and composition of body fluids with the help of a microscope is known as microscopic examination. The magnification of specimens or samples under study helps in attaining a clearer picture of it.
Gram Staining
Named after Hans Christian Gram, a Danish bacteriologist, Gram stain is one of the most powerful staining techniques within microbiology. This technique was introduced in 1882 to identify pneumonia-causing organisms. The Gram staining technique uses crystal violet or methylene blue as primary staining colors to distinguish gram-positive from gram-negative organisms. Under a microscope, the gram-positive organisms appear purple-brown, retaining the primary color. Gram-negative organisms appear pink or red as they do not acquire the color of the primary stain.
Each of the nine patient specimens listed below has produced a
positive culture when inoculated and grown on appropriate media.
Indicate whether this result is indicative of infection and explain why
or why not.
Urine from urethra
Liver biopsy
Blood
Lung biopsy
Throat
Urine from bladder
Saliva
Cerebrospinal fluid
Semen
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