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Which of the following best describes the mode of action of formaldehyde?

The air quality was monitored in a new histology laboratory. The report is as follows: TWA: 0.75 ppm PEL:  0.75 ppm STEL: 1.9 ppm What is the next step?

When using a cryostat for muscle biopsies, what would be the expected outcome of the stained section if  the tissues were allowed to slowly freeze?   

Identify the corrective action that would be taken here. 5.jpg 

Which fixative is useful for a post fixative of electron microscopy as it will preserve phospholipids?

When observing the results of a Von Kossa stain microscopically, it is noted that the calcium salts are staining a yellow to yellow brown color instead of the expected black. What is a plausible explanation for these results?

A pathologist requests both the Alcian blue, pH 2.5 and a Periodic Acid Schiff stain to be done on a tissue sample. These stains can be used to differentiate:

Formalin pigment is identified in a section of spleen. This pigmentation can be removed by treating the sections with:

A pathologist suspects that a patient has Alzheimer’s disease, what stain would be helpful in making this determination?

A quality control record indicates the paraffin melting point is between 52 C to 54 C degrees. Ideally the temperature for the tissue flotation bath should be established at: