Direct methods of studying unstained specimens include dissecting it and physical assessment.
cerival cancer test for cancer
Stained cells are easier to see while unstained cells are more difficult to notice. welcommeee:)
More light for stained. Less light for unstained. When viewing unstained material, it is necessary to reduce the amount of light to increase the contrast between the cells and the liquid.
It dries the smear and fixes the cells to the slide
Direct methods of studying unstained specimens include dissecting it and physical assessment.
Katothick faecal smear
Direct smear
Mention advantage of direct rule
i want to know about the advantage and disadvantages
A negative stain will stain the background with an acidic dye, such as Nigrosin. This procedure is used to demonstrate capsules. This technique brings the specimen off of the background for more adequate viewing purposes.
cerival cancer test for cancer
cerival cancer test for cancer
Stained cells are easier to see while unstained cells are more difficult to notice. welcommeee:)
To view unstained cells.
A smear is good for seeing any motile parasites in the feces, eggs may also be discovered though not as great as float because of the background material. Giardia is often missed in float because of weight of cysts, but may also be missed in smear as the cysts and trophozoite are not always shed.
A pap smear is a screening test for cervical cancer. Annual pap smears are no longer routinely recommended. Typically, women have a pap smear every three to five years, depending on her health history. Your health care provider can give you recommendations specific to your health history.