Can You Count White Blood Cells?
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Questions and Answers

What is the dilution of blood when using this method?

  • 0.5 in 10 (1/20 (correct)
  • 1 in 10 (1/10
  • 0.5 in 20 (1/40
  • 1 in 20 (1/20
  • What should be avoided when mixing the content of the pipette?

  • Creating air bubbles (correct)
  • Counting the total number of red cells instead of white cells
  • Using a high power objective on the microscope
  • Touching the tip to the counting platform
  • What is the correct angle to hold the pipette when touching the tip to the space between coverslip and counting platform?

  • 90 degrees
  • 45 degrees (correct)
  • 60 degrees
  • 30 degrees
  • Study Notes

    • Draw blood from finger puncture
    • Pipette white cells to mark 0.5
    • Dip tip in white cells solution
    • Suck fluid up to mark 11
    • Mix content thoroughly, avoid air bubbles
    • Dilution of blood is 0.5 in 10 (1/20)
    • Blow out 1/3 of bulb to wash away diluting fluid
    • Hold pipette at 45 degree angle, touch tip to space between coverslip and counting platform
    • Count total number of white cells in one large square of 1 sq.mm.
    • Use low power objective on microscope to focus on ruled area in center of platform.

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    Description

    Test your knowledge on the proper technique for counting white blood cells with this quiz! Learn how to properly dilute blood, use a pipette, and count white cells under a microscope. Brush up on your laboratory skills and impress your colleagues with your expertise. Keywords: blood, white cells, pipette, dilution, microscope, laboratory.

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