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Specimens from the nasopharynx are the preferred choice for diagnosing whooping cough because the causative agent, Bordetella pertussis, colonizes the epithelial cells in this region. Collecting samples from the nasopharynx allows for optimal recovery of the bacteria and accurate testing via culture, PCR, or antigen detection methods. Additionally, nasopharyngeal specimens are less invasive and more accessible than other sampling methods, making them practical for clinical settings.
What else can I help you with?
Can a bright field microscope be used to view living specimens?
Yes, a bright field microscope can be used to view living specimens, but it may not be the best choice depending on the specimen's transparency and how much detail needs to be observed. Dark field or phase contrast microscopy may be better for observing living specimens without staining.
Does clarithromycin help cure the whooping cough?
No. The drug of choice is Erythromycin.
Is a stain used to turn a specimen a pretty colour?
A stain is primarily used in microscopy to enhance the contrast of a specimen, making specific structures more visible under a microscope. While stains can impart vibrant colors to specimens, their main purpose is to highlight cellular components and improve visualization rather than to make them "pretty." The choice of stain can also provide information about the composition and characteristics of the specimen being examined.
Why water cannot be used instead of oil to dip the semiconductor specimen?
Water can react with the semiconductor materials, such as silicon, and potentially corrode or degrade them. Oil is non-reactive with semiconductor materials, making it a better choice for dipping semiconductor specimens for protection during storage and handling.
Which rock specimen should lead the student to choice 4 path a?
gneiss is the answer
Why some times we us blue and red with the illumination system of an optical microscope?
Blue and red filters in the illumination system of an optical microscope are used to enhance contrast and improve visibility of certain structures or specimens. Blue light is often used to highlight structures that absorb light best in the blue spectrum, while red light can help to reduce glare and improve contrast for certain specimens. The choice of filter color depends on the properties of the specimen being observed.
How is whooping cough treated?
Erythromycin, a macrolide antibiotic, has been the antimicrobial of choice for treatment or post exposure prophylaxis of pertussis. Azithromycin and clarithromycin are better tolerated.
Why would zaroff refer to shipwrecked sailors as specimens?
Zaroff refers to shipwrecked sailors as "specimens" to dehumanize them and emphasize his view of hunting as a sport rather than a moral issue. By labeling them as specimens, he reduces their value to mere objects for his entertainment, reflecting his twisted perspective on life and the thrill of the hunt. This choice of language underscores his sociopathic tendencies and the predatory nature of his character.
What are the two rules to a dichotomous key?
Each couplet in a dichotomous key presents a choice between two contrasting characteristics. The user must select the characteristic that best matches the specimen being identified in order to proceed to the next couplet.
What happens if you turn the coase adjustment knob while using the low power objective?
Nothing will happen because the coarse adjustment knob controls the position of the stage of the microscope, which is used to focus the specimen. This adjustment is independent of the choice of objective lens.
What is petrified wood used for?
Petrified wood is commonly used for decorative purposes, such as ornaments and jewelry. Its unique patterns and colors make it a popular choice for crafting jewelry pieces and display items. It can also be used in landscaping projects and as a material for artistic carvings and sculptures.
Can be the sun or a light bulb allows the specimen to be seen?
Yes, both the sun and a light bulb can illuminate a specimen, allowing it to be seen. Natural sunlight provides a broad spectrum of light, enhancing visibility and detail, while a light bulb offers artificial illumination that can be adjusted for brightness. The choice between them may depend on the specific context and desired effects for observation. In both cases, proper lighting is essential for effective viewing.
