Observing the Oil red O stain microscopically it is noted that fat droplets are present outside the tissue spaces; the best explanation for these findings are:

The action level of formaldehyde is ________________.

Astrocytes:Check all that apply.

The type of hematoxylin that would be used for the stain demonstrated here is: 12.jpg

A Cajal stain was performed. When comparing the control slide with the patient sample one notices that:Black astrocytes are demonstrated on the control slideAstrocytes appear same color as background on the patient’s slideThe explanation for these findings is:

A _____________________________ lens, on a microscope, will the image to stay in focus when magnification is changed.

For the van Gieson technique, collagen is stained by:

Another staining method that could be used to demonstrate the dark brown stained material seen in this stain is: 34.jpg

The counterstains that can be used for the Masson trichrome are:Check all that apply.

If a tissue section stained with the Congo red is cut at 13 microns the expected outcome (when using a polarizing microscope) may show: