What are white blood cells? What are the different types, and which are affected in acute myeloid leukemia?

What are white blood cells? What are the different types, and which are affected in acute myeloid leukemia?
What are platelets? What is considered a low platelet level for someone with What is hemoglobin and why do people with acute myeloid leukemia experience low levels?? How would I feel if my platelet count is low?
What is hemoglobin and why do people with acute myeloid leukemia experience low levels?
What is a complete blood count and how frequently will my doctor monitor this?
What other targets are being explored in CAR-T cell therapy?