The lymphatic system:

If a thymocyte fails to generate a functional TCR beta chain it will:

A bacterium is phagocytosed into a phagosome.  The phagosome then fuses with:

Name these cells in order from left to right (1 to 4):

Which cell type is often mobilised in large numbers from the bone marrow during infection?

In class you will count the number of cells in a blood sample.  The formula to calculate the number of cells/ml is:

If you had a blood sample and diluted 50 μl of your sample in 150 μl of white cell diluting fluid, and then counted the cells on a haemocytometer, counting:

• 89 cells in square A
• 102 cells in square B
• 97 cells in square C
• 99 cells in square D

What number of cells/ml do you have in your sample?  Report as a whole number, using standard notation (e.g. 4300 instead of 4.3 × 10³).

In class you will count the number of cells in a blood sample.  The formula to calculate the number of cells/ml is:

If you had a blood sample and diluted 20 μl of your sample in 80 μl of white cell diluting fluid, and then counted the cells on a haemocytometer, counting:

• 89 cells in square A
• 102 cells in square B
• 97 cells in square C
• 99 cells in square D

What number of cells/ml do you have in your sample?  Report as a whole number, using standard notation (e.g. 4300 instead of 4.3 × 10³).

In class you will count the number of cells in a blood sample.  The formula to calculate the number of cells/ml is:

If you had a blood sample and diluted 20 μl of your sample in 80 μl of white cell diluting fluid, and then counted the cells on a haemocytometer, counting:

• 76 cells in square A
• 70 cells in square B
• 67 cells in square C
• 86 cells in square D

What number of cells/ml do you have in your sample?  Report as a whole number, using standard notation (e.g. 4300 instead of 4.3 × 10³).

What is another name for white blood cells?