Basic histological staining methods

The video tutorial by Joao from Kenhub covers common staining techniques used in histology to visualize microscopic anatomy. It explains the use of acidic, basic, and neutral dyes, and details specific staining methods like haematoxylin and eosin, periodic acid-Schiff reaction, silver impregnation, toluidine blue, Masson's trichrome, and osmium tetroxide. Each technique is described with examples of its application in visualizing cellular structures. The tutorial emphasizes the importance of staining in differentiating cell components based on their chemical properties.

What is the primary purpose of using staining techniques in histology?

• To remove unwanted cellular structures

• To increase the size of cells

• To change the chemical composition of tissues

• To make cells and tissues visible under a microscope

Which type of dye carries a negative charge and binds to positively charged cell structures?

• Neutral dyes

• Acidic dyes

• Fluorescent dyes

• Basic dyes

In H&E staining, what color does haematoxylin impart to the nucleus?

• Red

• Blue or purple

• Green

• Pink

What type of molecules does the PAS staining technique primarily target?

• Proteins

• Carbohydrates

• Lipids

• Nucleic acids

Which staining technique is also known as the Golgi method?

• Toluidine blue

• Silver impregnation

• Masson's trichrome

• Osmium tetroxide

What color does toluidine blue stain nucleic acids?

• Red

• Green

• Blue

• Yellow

Which staining technique is used to visualize fat and myelin structures?

• H&E staining

• PAS reaction

• Osmium tetroxide

• Masson's trichrome