4. Stain the cells by placing several drops of methylene blue on the cheek scrapings. Wait for at least 2 min for the stain to take effect.
5.Gently rinse the methylene blue off the slide with water from a squirt bottle.
6.Use a paper towel to blot dry the bottom of the slide. Do not wipe the top!!
7.Add small drop of water to the cheek scrapings; then add a cover slip
8.Examine your cheek cells under the low-and high - power. Sketch your observation in the given box below.
9. Since the cheek cells are still relatively transparent, adjust the aperture of the diagram to obtain maximum contrast.
10.Rotate 100X oil immersion lens into he working position. Sketch your observations.