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What type of light microscopy is used to visualize stained specimens?
Brightfield microscopy is commonly used to visualize stained specimens. This type of light microscopy relies on illumination from below the specimen, making it possible to observe the contrast between specimen and background. Staining helps enhance this contrast by highlighting specific structures or components within the specimen.
What are the chemicals called that are sometimes used to make the specimens visible?
Stains.
What laboratory tool used in growing live specimens?
Commonly a petri dish, although there are many other mediums...even chicken broth!
What are the chemical called that are sometimes used to make the specimens visible?
The general term is 'stain' of which there are several chemicals that can be used, depending on the specimen.
What is the difference between phase-contrast microscopy and bright-field microscopy?
Phase-contrast microscopy is the observation of internal structures of living microbes where as bright field microscopy is the observation of killed stained specimens and naturally colored live ones.
What clinical specimens are gram stained?
The clinical specimens that are gram stained are microorganism, bodily fluids and sputum specimen. Gram staining makes it easier for the identification of organisms.
Why is half the body blue and half the body red?
That is not the case; you are looking at how some dissection specimens have had their veins and arteries stained. It is the dyes used in the preparation of the specimens.
Studying tissue specimens that are thinly sliced stained and observed under a microscope is called?
molecular biology
Why are specimens are to be stained suspended in sterile water?
Specimens are stained in sterile water to prevent contamination of the sample, which could affect the staining process and lead to inaccurate results. Staining in sterile water helps maintain the integrity of the sample and ensures that the staining procedure is carried out under controlled conditions.
What type of light microscopy is used to visualize stained specimens?
Brightfield microscopy is commonly used to visualize stained specimens. This type of light microscopy relies on illumination from below the specimen, making it possible to observe the contrast between specimen and background. Staining helps enhance this contrast by highlighting specific structures or components within the specimen.
Can live specimens be used in a TEM microscope?
Live specimens cannot be used in a transmission electron microscope (TEM) as the high vacuum environment and electron beam would quickly kill any living cells. Instead, biological specimens must be fixed, dehydrated, and stained prior to imaging in a TEM.
Why must specimens viewed with a compound microscope be thin why are they sometimes stained with dyes?
Specimens viewed with a compound microscope need to be thin to allow light to pass through and be focused by the lenses. Staining with dyes increases contrast and visibility of certain structures within the specimen by highlighting specific parts of the sample. This helps to distinguish different components and makes them easier to observe under the microscope.
What are the chemicals called that are sometimes used to make the specimens visible?
Stains.
How are biopsy specimens handled?
Biopsy specimens are often sliced into thin slices, stained, mounted on a glass slide, and examined using a light microscope. Newer sample preparation techniques involve the rapid freezing of the sample and slicing of the still-frozen material.
Why must a specimen be thin to be viewed under the microscope and why are they sometimes stained with dyes?
Specimens need to be thin to allow light to pass through and enable clear visualization under the microscope. Staining with dyes helps to highlight specific structures or components within the specimen, making them easier to observe and distinguish.
Does NBA player always wear new jersey?
No. Not unless it is damaged or stained. And sometimes not even then.
Which reason best explains why dead specimens must be used with transmission electron microscopes?
Dead specimens must be used with transmission electron microscopes because living cells are easily damaged by the high-energy electron beam used to create the image. Dead specimens can be fixed and stained to preserve their structure for imaging without being affected by the electron beam. Additionally, dead specimens allow for more control over sample preparation and consistency in imaging.
